diff --git a/packages/client/src/api/hooks/categoryHooks.ts b/packages/client/src/api/hooks/categoryHooks.ts
index 5b05377..cacfde7 100644
--- a/packages/client/src/api/hooks/categoryHooks.ts
+++ b/packages/client/src/api/hooks/categoryHooks.ts
@@ -1,9 +1,17 @@
-import { Category, CategoryWithCriteria, CreateCategory, CreateResponse, EntityWithEditableIndicator, PontozoError } from '@pontozo/common'
+import {
+  Category,
+  CategoryWithCriteria,
+  CategoryWithSeasons,
+  CreateCategory,
+  CreateResponse,
+  EntityWithEditableIndicator,
+  PontozoError,
+} from '@pontozo/common'
 import { useMutation, useQuery } from '@tanstack/react-query'
 import { functionAxios } from '../../util/axiosConfig'
 
 export const useFetchCategories = () => {
-  return useQuery<Category[], PontozoError>(['fetchCategories'], async () => (await functionAxios.get(`/categories`)).data, {
+  return useQuery<CategoryWithSeasons[], PontozoError>(['fetchCategories'], async () => (await functionAxios.get(`/categories`)).data, {
     retry: false,
   })
 }
@@ -35,3 +43,7 @@ export const useUpdateCategoryMutation = (categoryId: number) => {
 export const useDeleteCategoryMutation = (categoryId: number) => {
   return useMutation<CreateResponse[], PontozoError>(async () => (await functionAxios.delete(`/categories/${categoryId}`)).data)
 }
+
+export const useDuplicateCategoryMutation = (categoryId: number) => {
+  return useMutation<Category, Error>(async () => (await functionAxios.post(`/categories/${categoryId}/duplicate`)).data)
+}
diff --git a/packages/client/src/api/hooks/seasonHooks.ts b/packages/client/src/api/hooks/seasonHooks.ts
index ff21597..877bceb 100644
--- a/packages/client/src/api/hooks/seasonHooks.ts
+++ b/packages/client/src/api/hooks/seasonHooks.ts
@@ -33,3 +33,7 @@ export const useUpdateSeasonMutation = (seasonId: number) => {
 export const useDeleteSeasonMutation = (seasonId: number) => {
   return useMutation<CreateResponse[], PontozoError>(async () => (await functionAxios.delete(`/seasons/${seasonId}`)).data)
 }
+
+export const useDuplicateSeasonMutation = (seasonId: number) => {
+  return useMutation<Season, Error>(async () => (await functionAxios.post(`/seasons/${seasonId}/duplicate`)).data)
+}
diff --git a/packages/client/src/pages/categories/CategoryCreate.page.tsx b/packages/client/src/pages/categories/CategoryCreate.page.tsx
index 385005c..730e788 100644
--- a/packages/client/src/pages/categories/CategoryCreate.page.tsx
+++ b/packages/client/src/pages/categories/CategoryCreate.page.tsx
@@ -1,4 +1,18 @@
-import { Button, Flex, FormControl, FormErrorMessage, FormLabel, Heading, HStack, Input, Text, VStack } from '@chakra-ui/react'
+import {
+  Alert,
+  AlertIcon,
+  AlertTitle,
+  Button,
+  Flex,
+  FormControl,
+  FormErrorMessage,
+  FormLabel,
+  Heading,
+  HStack,
+  Input,
+  useToast,
+  VStack,
+} from '@chakra-ui/react'
 import { CreateCategoryForm } from '@pontozo/common'
 import { FormProvider, SubmitHandler, useForm } from 'react-hook-form'
 import { FaArrowLeft } from 'react-icons/fa'
@@ -9,6 +23,7 @@ import { NavigateWithError } from 'src/components/commons/NavigateWithError'
 import {
   useCreateCategoryMutation,
   useDeleteCategoryMutation,
+  useDuplicateCategoryMutation,
   useFetchCategory,
   useUpdateCategoryMutation,
 } from '../../api/hooks/categoryHooks'
@@ -35,9 +50,11 @@ export const CategoryCreatePage = () => {
     formState: { errors },
   } = form
   const navigate = useNavigate()
+  const toast = useToast()
   const createMutation = useCreateCategoryMutation()
   const updateMutation = useUpdateCategoryMutation(categoryId)
   const deleteMutation = useDeleteCategoryMutation(categoryId)
+  const duplicateMutation = useDuplicateCategoryMutation(categoryId)
 
   const onSubmit: SubmitHandler<CreateCategoryForm> = ({ criteria, ...restOfData }) => {
     if (categoryId === -1) {
@@ -47,6 +64,15 @@ export const CategoryCreatePage = () => {
     }
   }
 
+  const onDuplicateClick = () => {
+    duplicateMutation.mutate(undefined, {
+      onSuccess: (res) => {
+        navigate(`${PATHS.CATEGORIES}/${res.id}/edit`)
+        toast({ title: 'Kategória duplikálva!', description: 'Most már az újonnan létrejött kategóriát szerkeszted!', status: 'success' })
+      },
+    })
+  }
+
   if (isLoading && isFetching) {
     return <LoadingSpinner />
   }
@@ -57,7 +83,13 @@ export const CategoryCreatePage = () => {
     <VStack spacing={5} alignItems="flex-start">
       <HelmetTitle title="Pontoz-O Admin | Kategória szerkesztése" />
       <Heading>{categoryId === -1 ? 'Új kategória' : 'Kategória szerkesztése'}</Heading>
-      {!categoryEditable && <Text>Ez a kategória már nem szerkeszthető, mert része egy olyan szezonnak, ami már elkezdődött!</Text>}
+
+      {!categoryEditable && (
+        <Alert status="error">
+          <AlertIcon />
+          <AlertTitle>Ez a kategória nem szerkeszthető, mert része egy olyan szezonnak, ami már elkezdődött!</AlertTitle>
+        </Alert>
+      )}
       <FormControl isInvalid={!!errors.name}>
         <FormLabel>Név</FormLabel>
         <Input {...register('name', { required: true, disabled: !categoryEditable })} bg="white" />
@@ -78,6 +110,11 @@ export const CategoryCreatePage = () => {
           Vissza
         </Button>
         <HStack spacing={1}>
+          {categoryId > -1 && (
+            <Button colorScheme="brand" onClick={onDuplicateClick}>
+              Duplikálás
+            </Button>
+          )}
           {categoryId > -1 && (
             <ConfirmDialogButton
               confirmAction={() => deleteMutation.mutate(undefined, { onSuccess: () => navigate(PATHS.CATEGORIES) })}
diff --git a/packages/client/src/pages/categories/CategoryList.page.tsx b/packages/client/src/pages/categories/CategoryList.page.tsx
index e45450e..1cbc044 100644
--- a/packages/client/src/pages/categories/CategoryList.page.tsx
+++ b/packages/client/src/pages/categories/CategoryList.page.tsx
@@ -1,4 +1,4 @@
-import { Box, Button, Flex, Heading, Text, VStack } from '@chakra-ui/react'
+import { Badge, Box, Button, Flex, Heading, HStack, Text, VStack } from '@chakra-ui/react'
 import { Link } from 'react-router-dom'
 import { HelmetTitle } from 'src/components/commons/HelmetTitle'
 import { NavigateWithError } from 'src/components/commons/NavigateWithError'
@@ -26,7 +26,16 @@ export const CategoryListPage = () => {
       <VStack spacing={3} alignItems="flex-start">
         {data?.map((c) => (
           <Box w="100%" as={Link} to={`${PATHS.CATEGORIES}/${c.id}/edit`} bg="white" borderRadius={6} borderWidth={1} p={2} key={c.id}>
-            <Heading size="sm">{c.name}</Heading>
+            <HStack justify="space-between">
+              <Heading size="sm">{c.name}</Heading>
+              <HStack>
+                {c.seasons.map((s) => (
+                  <Badge variant="solid" colorScheme="brand" key={s.id}>
+                    {s.name}
+                  </Badge>
+                ))}
+              </HStack>
+            </HStack>
             <Text>{c.description}</Text>
           </Box>
         ))}
diff --git a/packages/client/src/pages/categories/components/CriteriaSelector.tsx b/packages/client/src/pages/categories/components/CriteriaSelector.tsx
index 2270c8b..24ae71c 100644
--- a/packages/client/src/pages/categories/components/CriteriaSelector.tsx
+++ b/packages/client/src/pages/categories/components/CriteriaSelector.tsx
@@ -84,7 +84,7 @@ export const CriteriaSelector = ({ editable }: { editable: boolean }) => {
                 <IconButton
                   aria-label="Szempont előrehozása"
                   size="xs"
-                  isDisabled={idx === 0 ?? !editable}
+                  isDisabled={idx === 0 || !editable}
                   icon={<FaCaretUp />}
                   colorScheme="brand"
                   onClick={() => moveCriterion(idx, c, -1)}
@@ -92,7 +92,7 @@ export const CriteriaSelector = ({ editable }: { editable: boolean }) => {
                 <IconButton
                   aria-label="Szempont hátrébb vitele"
                   size="xs"
-                  isDisabled={idx === watch('criteria').length - 1 ?? !editable}
+                  isDisabled={idx === watch('criteria').length - 1 || !editable}
                   icon={<FaCaretDown />}
                   colorScheme="brand"
                   onClick={() => moveCriterion(idx, c, 1)}
diff --git a/packages/client/src/pages/criteria/CriteriaCreate.page.tsx b/packages/client/src/pages/criteria/CriteriaCreate.page.tsx
index feb09c8..e54f783 100644
--- a/packages/client/src/pages/criteria/CriteriaCreate.page.tsx
+++ b/packages/client/src/pages/criteria/CriteriaCreate.page.tsx
@@ -1,4 +1,7 @@
 import {
+  Alert,
+  AlertIcon,
+  AlertTitle,
   Badge,
   Button,
   Checkbox,
@@ -12,7 +15,6 @@ import {
   SimpleGrid,
   Stack,
   Switch,
-  Text,
   useToast,
   VStack,
 } from '@chakra-ui/react'
@@ -122,7 +124,12 @@ export const CriteriaCreatePage = () => {
         </HStack>
       </HStack>
 
-      {!criterionEditable && <Text>Ez a szempont már nem szerkeszthető, mert része egy olyan szezonnak, ami már elkezdődött!</Text>}
+      {!criterionEditable && (
+        <Alert status="error">
+          <AlertIcon />
+          <AlertTitle>Ez a szempont nem szerkeszthető, mert része egy olyan szezonnak, ami már elkezdődött!</AlertTitle>
+        </Alert>
+      )}
       <FormControl isInvalid={!!errors.name}>
         <FormLabel>Név</FormLabel>
         <Input {...register('name', { required: true, disabled: !criterionEditable })} bg="white" />
diff --git a/packages/client/src/pages/seasons/SeasonCreate.page.tsx b/packages/client/src/pages/seasons/SeasonCreate.page.tsx
index 015b770..cc0cb29 100644
--- a/packages/client/src/pages/seasons/SeasonCreate.page.tsx
+++ b/packages/client/src/pages/seasons/SeasonCreate.page.tsx
@@ -1,4 +1,7 @@
 import {
+  Alert,
+  AlertIcon,
+  AlertTitle,
   Button,
   Flex,
   FormControl,
@@ -8,7 +11,6 @@ import {
   HStack,
   Input,
   Stack,
-  Text,
   useToast,
   VStack,
 } from '@chakra-ui/react'
@@ -21,7 +23,13 @@ import { ConfirmDialogButton } from 'src/components/commons/ConfirmDialogButton'
 import { HelmetTitle } from 'src/components/commons/HelmetTitle'
 import { NavigateWithError } from 'src/components/commons/NavigateWithError'
 import { onError } from 'src/util/onError'
-import { useCreateSeasonMutation, useDeleteSeasonMutation, useFetchSeason, useUpdateSeasonMutation } from '../../api/hooks/seasonHooks'
+import {
+  useCreateSeasonMutation,
+  useDeleteSeasonMutation,
+  useDuplicateSeasonMutation,
+  useFetchSeason,
+  useUpdateSeasonMutation,
+} from '../../api/hooks/seasonHooks'
 import { LoadingSpinner } from '../../components/commons/LoadingSpinner'
 import { PATHS } from '../../util/paths'
 import { CategorySelector } from './components/CategorySelector'
@@ -51,6 +59,7 @@ export const SeasonCreatePage = () => {
   const createMutation = useCreateSeasonMutation()
   const updateMutation = useUpdateSeasonMutation(seasonId)
   const deleteMutation = useDeleteSeasonMutation(seasonId)
+  const duplicateMutation = useDuplicateSeasonMutation(seasonId)
 
   useEffect(() => {
     if (seasonId !== -1 && data && !isLoading) {
@@ -64,6 +73,15 @@ export const SeasonCreatePage = () => {
     }
   }, [data, isLoading, seasonId, setValue])
 
+  const onDuplicateClick = () => {
+    duplicateMutation.mutate(undefined, {
+      onSuccess: (res) => {
+        navigate(`${PATHS.SEASONS}/${res.id}/edit`)
+        toast({ title: 'Szezon duplikálva!', description: 'Most már az újonnan létrejött szezont szerkeszted!', status: 'success' })
+      },
+    })
+  }
+
   if (isLoading && isFetching) {
     return <LoadingSpinner />
   }
@@ -90,7 +108,13 @@ export const SeasonCreatePage = () => {
     <VStack spacing={5} alignItems="flex-start">
       <HelmetTitle title="Pontoz-O Admin | Szezon szerkesztése" />
       <Heading>{seasonId === -1 ? 'Új szezon' : 'Szezon szerkesztése'}</Heading>
-      {!seasonEditable && <Text>Ez a szezon már nem szerkeszthető, mert már elkezdődött!</Text>}
+
+      {!seasonEditable && (
+        <Alert status="error">
+          <AlertIcon />
+          <AlertTitle>Ez a szezon nem szerkeszthető, mert már elkezdődött!</AlertTitle>
+        </Alert>
+      )}
       <FormControl isInvalid={!!errors.name}>
         <FormLabel>Név</FormLabel>
         <Input {...register('name', { required: true, disabled: !seasonEditable })} bg="white" />
@@ -138,6 +162,11 @@ export const SeasonCreatePage = () => {
           Vissza
         </Button>
         <HStack spacing={1}>
+          {seasonId > -1 && (
+            <Button colorScheme="brand" onClick={onDuplicateClick}>
+              Duplikálás
+            </Button>
+          )}
           {seasonId > -1 && (
             <ConfirmDialogButton
               confirmAction={() =>
diff --git a/packages/client/src/pages/seasons/components/CategorySelector.tsx b/packages/client/src/pages/seasons/components/CategorySelector.tsx
index fe09e01..880543d 100644
--- a/packages/client/src/pages/seasons/components/CategorySelector.tsx
+++ b/packages/client/src/pages/seasons/components/CategorySelector.tsx
@@ -1,9 +1,11 @@
 import {
+  Badge,
   Box,
   Button,
   FormControl,
   FormErrorMessage,
   FormLabel,
+  Heading,
   HStack,
   IconButton,
   Input,
@@ -173,7 +175,8 @@ export const CategorySelector = ({ editable }: { editable: boolean }) => {
                 <Text fontStyle="italic">Nincs találat</Text>
               ) : (
                 filteredCategoryList.map((c) => (
-                  <Box
+                  <VStack
+                    alignItems="flex-start"
                     borderRadius={6}
                     borderWidth={1}
                     p={2}
@@ -185,8 +188,17 @@ export const CategorySelector = ({ editable }: { editable: boolean }) => {
                       onClose()
                     }}
                   >
-                    <Text width="100%">{c.name}</Text>
-                  </Box>
+                    <Heading size="xs" width="100%">
+                      {c.name}
+                    </Heading>
+                    <HStack>
+                      {c.seasons.map((s) => (
+                        <Badge variant="solid" colorScheme="brand" key={s.id}>
+                          {s.name}
+                        </Badge>
+                      ))}
+                    </HStack>
+                  </VStack>
                 ))
               )}
             </VStack>
diff --git a/packages/common/src/lib/types/categories.ts b/packages/common/src/lib/types/categories.ts
index a5ee042..550b3fe 100644
--- a/packages/common/src/lib/types/categories.ts
+++ b/packages/common/src/lib/types/categories.ts
@@ -1,5 +1,6 @@
 import { ArrayUnique, IsInt, IsNotEmpty, IsString, Min } from 'class-validator'
 import { Criterion } from './criteria'
+import { Season } from './seasons'
 
 export interface Category {
   id: number
@@ -25,3 +26,7 @@ export type CreateCategoryForm = Omit<CategoryWithCriteria, 'id'>
 export interface CategoryWithCriteria extends Category {
   criteria: Criterion[]
 }
+
+export interface CategoryWithSeasons extends Category {
+  seasons: Season[]
+}
diff --git a/packages/functions/src/functions/categories/duplicate.ts b/packages/functions/src/functions/categories/duplicate.ts
new file mode 100644
index 0000000..5fc6138
--- /dev/null
+++ b/packages/functions/src/functions/categories/duplicate.ts
@@ -0,0 +1,48 @@
+import { app, HttpRequest, HttpResponseInit, InvocationContext } from '@azure/functions'
+import { PontozoException } from '@pontozo/common'
+import { getUserFromHeaderAndAssertAdmin } from '../../service/auth.service'
+import Category from '../../typeorm/entities/Category'
+import { CategoryToCriterion } from '../../typeorm/entities/CategoryToCriterion'
+import { getAppDataSource } from '../../typeorm/getConfig'
+import { handleException } from '../../util/handleException'
+import { validateId } from '../../util/validation'
+
+export const duplicateCategory = async (req: HttpRequest, context: InvocationContext): Promise<HttpResponseInit> => {
+  try {
+    const user = await getUserFromHeaderAndAssertAdmin(req, context)
+    const id = validateId(req)
+
+    const ads = await getAppDataSource(context)
+    const oldCategory = await ads.manager.findOne(Category, {
+      where: { id },
+      relations: { criteria: true },
+    })
+    if (oldCategory === null) {
+      throw new PontozoException('A kategória nem található!', 404)
+    }
+
+    const newCategory = new Category()
+    newCategory.name = oldCategory.name
+    newCategory.description = oldCategory.description
+    newCategory.criteria = oldCategory.criteria.map((ctc) => {
+      const newCtc = new CategoryToCriterion()
+      newCtc.criterionId = ctc.criterionId
+      newCtc.order = ctc.order
+      return newCtc
+    })
+    await ads.manager.save(newCategory)
+
+    context.log(`User #${user.szemely_id} duplicated category #${oldCategory.id}`)
+    return {
+      jsonBody: newCategory,
+    }
+  } catch (error) {
+    return handleException(req, context, error)
+  }
+}
+
+app.http('categories-duplicate', {
+  methods: ['POST'],
+  route: 'categories/{id}/duplicate',
+  handler: duplicateCategory,
+})
diff --git a/packages/functions/src/functions/categories/getAll.ts b/packages/functions/src/functions/categories/getAll.ts
index a4840ec..d7311e0 100644
--- a/packages/functions/src/functions/categories/getAll.ts
+++ b/packages/functions/src/functions/categories/getAll.ts
@@ -10,9 +10,9 @@ export const getCategories = async (req: HttpRequest, context: InvocationContext
     await getUserFromHeaderAndAssertAdmin(req, context)
 
     const categoryRepo = (await getAppDataSource(context)).getRepository(Category)
-    const categories = await categoryRepo.find({ relations: { criteria: true } })
+    const categories = await categoryRepo.find({ relations: { seasons: { season: true } } })
     return {
-      jsonBody: categories,
+      jsonBody: categories.map((c) => ({ ...c, seasons: c.seasons.map((cts) => cts.season) })),
     }
   } catch (error) {
     return handleException(req, context, error)
diff --git a/packages/functions/src/functions/seasons/duplicate.ts b/packages/functions/src/functions/seasons/duplicate.ts
new file mode 100644
index 0000000..9463c9a
--- /dev/null
+++ b/packages/functions/src/functions/seasons/duplicate.ts
@@ -0,0 +1,50 @@
+import { app, HttpRequest, HttpResponseInit, InvocationContext } from '@azure/functions'
+import { PontozoException } from '@pontozo/common'
+import { getUserFromHeaderAndAssertAdmin } from '../../service/auth.service'
+import Season from '../../typeorm/entities/Season'
+import { SeasonToCategory } from '../../typeorm/entities/SeasonToCategory'
+import { getAppDataSource } from '../../typeorm/getConfig'
+import { handleException } from '../../util/handleException'
+import { validateId } from '../../util/validation'
+
+export const duplicateSeason = async (req: HttpRequest, context: InvocationContext): Promise<HttpResponseInit> => {
+  try {
+    const user = await getUserFromHeaderAndAssertAdmin(req, context)
+    const id = validateId(req)
+
+    const ads = await getAppDataSource(context)
+    const oldSeason = await ads.manager.findOne(Season, {
+      where: { id },
+      relations: { categories: true },
+    })
+    if (oldSeason === null) {
+      throw new PontozoException('A szezon nem található!', 404)
+    }
+
+    const newSeason = new Season()
+    newSeason.name = oldSeason.name + ' másolata'
+    newSeason.startDate = new Date(Date.now() + 1000 * 60 * 60 * 24)
+    newSeason.endDate = new Date(newSeason.startDate.getTime() + 1000 * 60 * 60 * 24 * 365)
+
+    newSeason.categories = oldSeason.categories.map((stc) => {
+      const newCtc = new SeasonToCategory()
+      newCtc.categoryId = stc.categoryId
+      newCtc.order = stc.order
+      return newCtc
+    })
+    await ads.manager.save(newSeason)
+
+    context.log(`User #${user.szemely_id} duplicated season #${oldSeason.id}`)
+    return {
+      jsonBody: newSeason,
+    }
+  } catch (error) {
+    return handleException(req, context, error)
+  }
+}
+
+app.http('season-duplicate', {
+  methods: ['POST'],
+  route: 'seasons/{id}/duplicate',
+  handler: duplicateSeason,
+})