diff --git a/arch/nios2/core/irq_manage.c b/arch/nios2/core/irq_manage.c
index 02949ccf0a3..87a8ed42936 100644
--- a/arch/nios2/core/irq_manage.c
+++ b/arch/nios2/core/irq_manage.c
@@ -69,22 +69,6 @@ void _arch_irq_disable(unsigned int irq)
 };
 
 
-int _arch_irq_connect_dynamic(unsigned int irq,
-					 unsigned int priority,
-					 void (*routine)(void *parameter),
-					 void *parameter,
-					 uint32_t flags)
-{
-	ARG_UNUSED(irq);
-	ARG_UNUSED(priority);
-	ARG_UNUSED(routine);
-	ARG_UNUSED(parameter);
-	ARG_UNUSED(flags);
-
-	/* STUB. May never implement this, part of a deprecated API */
-	return -1;
-};
-
 /**
  * @brief Interrupt demux function
  *
diff --git a/doc/porting/arch.rst b/doc/porting/arch.rst
index ce2ff4ed4be..1b47ef60159 100644
--- a/doc/porting/arch.rst
+++ b/doc/porting/arch.rst
@@ -149,9 +149,7 @@ Each architecture also has to implement primitives for interrupt control:
 
 .. note::
 
-  Zephyr currently supports for connecting interrupts dynamically, i.e. at
-  runtime using :c:func:`irq_connect_dynamic`: this is getting deprecated.
-  :c:macro:`irq_connect` is a macro that uses assembler and/or linker script
+  :c:macro:`IRQ_CONNECT` is a macro that uses assembler and/or linker script
   tricks to connect interrupts at build time, saving boot time and text size.
 
 The vector table should contain a handler for each interrupt and exception that
diff --git a/drivers/interrupt_controller/ioapic_intr.c b/drivers/interrupt_controller/ioapic_intr.c
index 974f3aefd9a..c7052545841 100644
--- a/drivers/interrupt_controller/ioapic_intr.c
+++ b/drivers/interrupt_controller/ioapic_intr.c
@@ -124,15 +124,6 @@ int _ioapic_init(struct device *unused)
 	 *
 	 * ((__IoApicGet(IOAPIC_VERS) & IOAPIC_MRE_MASK) >> 16) + 1
 	 */
-
-	/*
-	 * Initialize the redirection table entries with default settings;
-	 * actual interrupt vectors are specified during irq_connect_dynamic().
-	 *
-	 * A future enhancement should make this initialization "table driven":
-	 * use data provided by the platform to specify the initial state
-	 */
-
 	rteValue = IOAPIC_EDGE | IOAPIC_HIGH | IOAPIC_FIXED | IOAPIC_INT_MASK |
 		   IOAPIC_PHYSICAL | 0 /* dummy vector */;
 
diff --git a/drivers/interrupt_controller/loapic_intr.c b/drivers/interrupt_controller/loapic_intr.c
index 661aaf442b5..7dc1d53fd66 100644
--- a/drivers/interrupt_controller/loapic_intr.c
+++ b/drivers/interrupt_controller/loapic_intr.c
@@ -285,10 +285,7 @@ static int _loapic_init(struct device *unused)
  *
  * @brief Set the vector field in the specified RTE
  *
- * This routine is utilized by the interrupt controller's
- * _interrupt_vector_allocate() routine (which exists to support the
- * irq_connect_dynamic() API).  Once a vector has been allocated, this routine
- * is invoked to update the LVT entry associated with <irq> with the vector.
+ * This associates an IRQ with the desired vector in the IDT.
  *
  * @return N/A
  */
diff --git a/include/arch/arc/arch.h b/include/arch/arc/arch.h
index b69c5f6e3c0..e503690d169 100644
--- a/include/arch/arc/arch.h
+++ b/include/arch/arc/arch.h
@@ -64,8 +64,7 @@ extern void _irq_priority_set(unsigned int irq, unsigned int prio,
 /**
  * Configure a static interrupt.
  *
- * All arguments must be computable by the compiler at build time; if this
- * can't be done use irq_connect_dynamic() instead.
+ * All arguments must be computable by the compiler at build time.
  *
  * Internally this function does a few things:
  *
diff --git a/include/arch/arm/cortex_m/irq.h b/include/arch/arm/cortex_m/irq.h
index 6019bda238e..13bd043c484 100644
--- a/include/arch/arm/cortex_m/irq.h
+++ b/include/arch/arm/cortex_m/irq.h
@@ -57,7 +57,7 @@ extern void _irq_priority_set(unsigned int irq, unsigned int prio,
 			      uint32_t flags);
 
 
-/* Flags for use with IRQ_CONNECT() or irq_connect_dynamic() */
+/* Flags for use with IRQ_CONNECT() */
 #if CONFIG_ZERO_LATENCY_IRQS
 /**
  * Set this interrupt up as a zero-latency IRQ. It has a fixed hardware
@@ -71,8 +71,7 @@ extern void _irq_priority_set(unsigned int irq, unsigned int prio,
 /**
  * Configure a static interrupt.
  *
- * All arguments must be computable by the compiler at build time; if this
- * can't be done use irq_connect_dynamic() instead.
+ * All arguments must be computable by the compiler at build time.
  *
  * Internally this function does a few things:
  *
diff --git a/include/arch/nios2/arch.h b/include/arch/nios2/arch.h
index 19737ff4ad4..7a98c1524da 100644
--- a/include/arch/nios2/arch.h
+++ b/include/arch/nios2/arch.h
@@ -57,8 +57,7 @@ typedef unsigned int vaddr_t;
 /**
  * Configure a static interrupt.
  *
- * All arguments must be computable by the compiler at build time; if this
- * can't be done use irq_connect_dynamic() instead.
+ * All arguments must be computable by the compiler at build time.
  *
  * Internally this function does a few things:
  *
@@ -133,9 +132,6 @@ static ALWAYS_INLINE void _arch_irq_unlock(unsigned int key)
 #endif
 }
 
-int _arch_irq_connect_dynamic(unsigned int irq, unsigned int priority,
-			      void (*routine)(void *parameter), void *parameter,
-			      uint32_t flags);
 void _arch_irq_enable(unsigned int irq);
 void _arch_irq_disable(unsigned int irq);
 
diff --git a/include/arch/x86/arch.h b/include/arch/x86/arch.h
index 2988e73fa2c..595dd2cdea1 100644
--- a/include/arch/x86/arch.h
+++ b/include/arch/x86/arch.h
@@ -163,8 +163,7 @@ typedef struct s_isrList {
 /**
  * Configure a static interrupt.
  *
- * All arguments must be computable by the compiler at build time; if this
- * can't be done use irq_connect_dynamic() instead.
+ * All arguments must be computable by the compiler at build time.
  *
  * Internally this function does a few things:
  *