diff --git a/docs/en/jpql-with-kotlin-jdsl/expressions.md b/docs/en/jpql-with-kotlin-jdsl/expressions.md
index ee124dee0..287f4e195 100644
--- a/docs/en/jpql-with-kotlin-jdsl/expressions.md
+++ b/docs/en/jpql-with-kotlin-jdsl/expressions.md
@@ -225,6 +225,7 @@ Use the following functions to build arithmetic functions:
 
 * ABS (abs)
 * CEILING (ceiling)
+* FLOOR (floor)
 * ROUND (round)
 * SQRT (sqrt)
 
@@ -233,6 +234,8 @@ abs(path(Book::price))
 
 ceiling(path(Book::price))
 
+floor(path(Book::price))
+
 round(path(Book::price), 2)
 
 sqrt(path(Book::price))
diff --git a/docs/ko/jpql-with-kotlin-jdsl/expressions.md b/docs/ko/jpql-with-kotlin-jdsl/expressions.md
index e0acf2968..9c13e1c98 100644
--- a/docs/ko/jpql-with-kotlin-jdsl/expressions.md
+++ b/docs/ko/jpql-with-kotlin-jdsl/expressions.md
@@ -221,6 +221,7 @@ locate("Book", path(Book::title))
 
 * ABS (abs)
 * CEILING (ceiling)
+* FLOOR (floor)
 * ROUND (round)
 * SQRT (sqrt)
 
@@ -229,6 +230,8 @@ abs(path(Book::price))
 
 ceiling(path(Book::price))
 
+floor(path(Book::price))
+
 round(path(Book::price), 2)
 
 sqrt(path(Book::price))
diff --git a/dsl/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/Jpql.kt b/dsl/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/Jpql.kt
index 4d67fcf5c..75b37025d 100644
--- a/dsl/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/Jpql.kt
+++ b/dsl/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/Jpql.kt
@@ -568,6 +568,22 @@ open class Jpql : JpqlDsl {
         return Expressions.ceiling(value.toExpression())
     }
 
+    /**
+     * Creates an expression that is enclosed in floor.
+     */
+    @SinceJdsl("3.4.0")
+    fun <T : Any, V : Number> floor(expr: KProperty1<T, @Exact V>): Expression<V> {
+        return Expressions.floor(Paths.path(expr))
+    }
+
+    /**
+     * Creates an expression that is enclosed in floor.
+     */
+    @SinceJdsl("3.4.0")
+    fun <T : Number> floor(value: Expressionable<T>): Expression<T> {
+        return Expressions.floor(value.toExpression())
+    }
+
     /**
      * Creates an expression that represents the rounding of the value to a specified scale.
      */
diff --git a/dsl/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/expression/FloorDslTest.kt b/dsl/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/expression/FloorDslTest.kt
new file mode 100644
index 000000000..4205b5c8a
--- /dev/null
+++ b/dsl/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/expression/FloorDslTest.kt
@@ -0,0 +1,48 @@
+package com.linecorp.kotlinjdsl.dsl.jpql.expression
+
+import com.linecorp.kotlinjdsl.dsl.jpql.entity.book.Book
+import com.linecorp.kotlinjdsl.dsl.jpql.queryPart
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expression
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions
+import com.linecorp.kotlinjdsl.querymodel.jpql.path.Paths
+import org.assertj.core.api.WithAssertions
+import org.junit.jupiter.api.Test
+import java.math.BigDecimal
+
+class FloorDslTest : WithAssertions {
+    private val expression1 = Paths.path(Book::salePrice)
+
+    @Test
+    fun `floor() with a property`() {
+        // when
+        val expression = queryPart {
+            floor(Book::price)
+        }.toExpression()
+
+        val actual: Expression<BigDecimal> = expression // for type check
+
+        // then
+        val expected = Expressions.floor(
+            value = Paths.path(Book::price),
+        )
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
+    @Test
+    fun `floor() with a expression`() {
+        // when
+        val expression = queryPart {
+            floor(expression1)
+        }.toExpression()
+
+        val actual: Expression<BigDecimal> = expression // for type check
+
+        // then
+        val expected = Expressions.floor(
+            value = expression1,
+        )
+
+        assertThat(actual).isEqualTo(expected)
+    }
+}
diff --git a/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/Expressions.kt b/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/Expressions.kt
index 39be02418..045d93ea7 100644
--- a/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/Expressions.kt
+++ b/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/Expressions.kt
@@ -16,6 +16,7 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlDivide
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlEntityType
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlExpressionParentheses
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFloor
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFunctionExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlLength
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlLiteral
@@ -226,6 +227,14 @@ object Expressions {
         return JpqlCeiling(value)
     }
 
+    /**
+     * Creates an expression that is enclosed in floor.
+     */
+    @SinceJdsl("3.4.0")
+    fun <T : Number> floor(value: Expression<T>): Expression<T> {
+        return JpqlFloor(value)
+    }
+
     /**
      * Creates an expression that represents the rounding of the specified value to a specified scale.
      */
diff --git a/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/impl/JpqlFloor.kt b/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/impl/JpqlFloor.kt
new file mode 100644
index 000000000..88364ccb8
--- /dev/null
+++ b/query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/impl/JpqlFloor.kt
@@ -0,0 +1,12 @@
+package com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl
+
+import com.linecorp.kotlinjdsl.Internal
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expression
+
+/**
+ * Expression that applies the floor function to [value].
+ */
+@Internal
+data class JpqlFloor<T : Number> internal constructor(
+    val value: Expression<T>,
+) : Expression<T>
diff --git a/query-model/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/ExpressionsTest.kt b/query-model/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/ExpressionsTest.kt
index b06ae991f..9fb1f6b87 100644
--- a/query-model/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/ExpressionsTest.kt
+++ b/query-model/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/ExpressionsTest.kt
@@ -18,6 +18,7 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlDivide
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlEntityType
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlExpressionParentheses
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFloor
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFunctionExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlLength
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlLiteral
@@ -362,6 +363,19 @@ class ExpressionsTest : WithAssertions {
         assertThat(actual).isEqualTo(expected)
     }
 
+    @Test
+    fun floor() {
+        // when
+        val actual = Expressions.floor(doubleExpression1)
+
+        // then
+        val expected = JpqlFloor(
+            doubleExpression1,
+        )
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
     @Test
     fun round() {
         // when
diff --git a/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/JpqlRenderContext.kt b/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/JpqlRenderContext.kt
index fe180877c..094735378 100644
--- a/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/JpqlRenderContext.kt
+++ b/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/JpqlRenderContext.kt
@@ -39,6 +39,7 @@ import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlEqualSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlExistsSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlExpressionParenthesesSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlExpressionSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlFloorSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlFunctionExpressionSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlFunctionPredicateSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlGreaterThanAllSerializer
@@ -288,6 +289,7 @@ private class DefaultModule : JpqlRenderModule {
             JpqlExistsSerializer(),
             JpqlExpressionParenthesesSerializer(),
             JpqlExpressionSerializer(),
+            JpqlFloorSerializer(),
             JpqlFunctionExpressionSerializer(),
             JpqlFunctionPredicateSerializer(),
             JpqlGreaterThanAllSerializer(),
diff --git a/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializer.kt b/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializer.kt
new file mode 100644
index 000000000..04dd9157e
--- /dev/null
+++ b/render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializer.kt
@@ -0,0 +1,26 @@
+package com.linecorp.kotlinjdsl.render.jpql.serializer.impl
+
+import com.linecorp.kotlinjdsl.Internal
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFloor
+import com.linecorp.kotlinjdsl.render.RenderContext
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlRenderSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlSerializer
+import com.linecorp.kotlinjdsl.render.jpql.writer.JpqlWriter
+import kotlin.reflect.KClass
+
+@Internal
+class JpqlFloorSerializer : JpqlSerializer<JpqlFloor<*>> {
+    override fun handledType(): KClass<JpqlFloor<*>> {
+        return JpqlFloor::class
+    }
+
+    override fun serialize(part: JpqlFloor<*>, writer: JpqlWriter, context: RenderContext) {
+        val delegate = context.getValue(JpqlRenderSerializer)
+
+        writer.write("FLOOR")
+
+        writer.writeParentheses {
+            delegate.serialize(part.value, writer, context)
+        }
+    }
+}
diff --git a/render/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializerTest.kt b/render/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializerTest.kt
new file mode 100644
index 000000000..528548a4a
--- /dev/null
+++ b/render/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlFloorSerializerTest.kt
@@ -0,0 +1,55 @@
+package com.linecorp.kotlinjdsl.render.jpql.serializer.impl
+
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlFloor
+import com.linecorp.kotlinjdsl.querymodel.jpql.path.Paths
+import com.linecorp.kotlinjdsl.render.TestRenderContext
+import com.linecorp.kotlinjdsl.render.jpql.entity.book.Book
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlRenderSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlSerializerTest
+import com.linecorp.kotlinjdsl.render.jpql.writer.JpqlWriter
+import io.mockk.impl.annotations.MockK
+import io.mockk.verifySequence
+import org.assertj.core.api.WithAssertions
+import org.junit.jupiter.api.Test
+
+@JpqlSerializerTest
+class JpqlFloorSerializerTest : WithAssertions {
+    private val sut = JpqlFloorSerializer()
+
+    @MockK
+    private lateinit var writer: JpqlWriter
+
+    @MockK
+    private lateinit var serializer: JpqlRenderSerializer
+
+    private val expression1 = Paths.path(Book::price)
+
+    @Test
+    fun handledType() {
+        // when
+        val actual = sut.handledType()
+
+        // then
+        assertThat(actual).isEqualTo(JpqlFloor::class)
+    }
+
+    @Test
+    fun serialize() {
+        // given
+        val part = Expressions.floor(
+            value = expression1,
+        )
+        val context = TestRenderContext(serializer)
+
+        // when
+        sut.serialize(part as JpqlFloor<*>, writer, context)
+
+        // then
+        verifySequence {
+            writer.write("FLOOR")
+            writer.writeParentheses(any())
+            serializer.serialize(expression1, writer, context)
+        }
+    }
+}