diff --git a/lib/posix/options/barrier.c b/lib/posix/options/barrier.c
index 7e2598b1bde840..c108b28da2171f 100644
--- a/lib/posix/options/barrier.c
+++ b/lib/posix/options/barrier.c
@@ -19,7 +19,9 @@ struct posix_barrier {
 	uint32_t count;
 };
 
+__pinned_bss
 static struct posix_barrier posix_barrier_pool[CONFIG_MAX_PTHREAD_BARRIER_COUNT];
+
 SYS_BITARRAY_DEFINE_STATIC(posix_barrier_bitarray, CONFIG_MAX_PTHREAD_BARRIER_COUNT);
 
 /*
@@ -195,6 +197,7 @@ int pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
 	return 0;
 }
 
+__boot_func
 static int pthread_barrier_pool_init(void)
 {
 	int err;
diff --git a/lib/posix/options/cond.c b/lib/posix/options/cond.c
index f94c2ea7a3b5da..8155b993fcc22f 100644
--- a/lib/posix/options/cond.c
+++ b/lib/posix/options/cond.c
@@ -17,7 +17,9 @@ LOG_MODULE_REGISTER(pthread_cond, CONFIG_PTHREAD_COND_LOG_LEVEL);
 
 int64_t timespec_to_timeoutms(const struct timespec *abstime);
 
+__pinned_bss
 static struct k_condvar posix_cond_pool[CONFIG_MAX_PTHREAD_COND_COUNT];
+
 SYS_BITARRAY_DEFINE_STATIC(posix_cond_bitarray, CONFIG_MAX_PTHREAD_COND_COUNT);
 
 /*
@@ -209,6 +211,7 @@ int pthread_cond_destroy(pthread_cond_t *cvar)
 	return 0;
 }
 
+__boot_func
 static int pthread_cond_pool_init(void)
 {
 	int err;
diff --git a/lib/posix/options/mutex.c b/lib/posix/options/mutex.c
index cd320a969dca8f..d6a54fd36d5610 100644
--- a/lib/posix/options/mutex.c
+++ b/lib/posix/options/mutex.c
@@ -29,7 +29,9 @@ static const struct pthread_mutexattr def_attr = {
 	.type = PTHREAD_MUTEX_DEFAULT,
 };
 
+__pinned_bss
 static struct k_mutex posix_mutex_pool[CONFIG_MAX_PTHREAD_MUTEX_COUNT];
+
 static uint8_t posix_mutex_type[CONFIG_MAX_PTHREAD_MUTEX_COUNT];
 SYS_BITARRAY_DEFINE_STATIC(posix_mutex_bitarray, CONFIG_MAX_PTHREAD_MUTEX_COUNT);
 
@@ -451,6 +453,7 @@ int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr, int prioceiling)
 
 #endif /* CONFIG_POSIX_THREAD_PRIO_PROTECT */
 
+__boot_func
 static int pthread_mutex_pool_init(void)
 {
 	int err;
diff --git a/lib/posix/options/pthread.c b/lib/posix/options/pthread.c
index c54a061f9e76b4..33ee36668e66d0 100644
--- a/lib/posix/options/pthread.c
+++ b/lib/posix/options/pthread.c
@@ -83,12 +83,17 @@ BUILD_ASSERT(CONFIG_POSIX_PTHREAD_ATTR_STACKSIZE_BITS + CONFIG_POSIX_PTHREAD_ATT
 
 int64_t timespec_to_timeoutms(const struct timespec *abstime);
 static void posix_thread_recycle(void);
+
+__pinned_data
 static sys_dlist_t posix_thread_q[] = {
 	SYS_DLIST_STATIC_INIT(&posix_thread_q[POSIX_THREAD_READY_Q]),
 	SYS_DLIST_STATIC_INIT(&posix_thread_q[POSIX_THREAD_RUN_Q]),
 	SYS_DLIST_STATIC_INIT(&posix_thread_q[POSIX_THREAD_DONE_Q]),
 };
+
+__pinned_bss
 static struct posix_thread posix_thread_pool[CONFIG_MAX_PTHREAD_COUNT];
+
 static SYS_SEM_DEFINE(pthread_pool_lock, 1, 1);
 static int pthread_concurrency;
 
@@ -1536,6 +1541,7 @@ int pthread_sigmask(int how, const sigset_t *ZRESTRICT set, sigset_t *ZRESTRICT
 	return ret;
 }
 
+__boot_func
 static int posix_thread_pool_init(void)
 {
 	ARRAY_FOR_EACH_PTR(posix_thread_pool, th) {