diff --git a/changelog.txt b/changelog.txt
index c4b6b897..bef1a884 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -50,6 +50,7 @@ FIX:		Fixed resetting a timer on gwinImage objects when using animated GIFs
 FEATURE:	Added gwinTextEditSendKey() and gwinTextEditSendSpecialKey()
 FEATURE:	Implemented the JPG image decoder
 FEATURE:	Added SSD1322 driver
+FEATURE:    Added support for Zephyr operating system
 
 
 *** Release 2.7 ***
diff --git a/gfxconf.example.h b/gfxconf.example.h
index e32dd19f..208061e5 100644
--- a/gfxconf.example.h
+++ b/gfxconf.example.h
@@ -40,6 +40,7 @@
 //#define GFX_USE_OS_CMSIS                             FALSE
 //#define GFX_USE_OS_CMSIS2                            FALSE
 //#define GFX_USE_OS_RAW32                             FALSE
+//#define GFX_USE_OS_ZEPHYR                            FALSE
 //#define GFX_USE_OS_NIOS                              FALSE
 //#define GFX_USE_OS_QT                                FALSE
 //    #define INTERRUPTS_OFF()                         optional_code
diff --git a/src/gos/gos.h b/src/gos/gos.h
index dedfcdda..da09a38a 100644
--- a/src/gos/gos.h
+++ b/src/gos/gos.h
@@ -484,6 +484,8 @@
     #include "gos_rtx5.h"
 #elif GFX_USE_OS_NIOS
     #include "gos_nios.h"
+#elif GFX_USE_OS_ZEPHYR
+	#include "gos_zephyr.h"
 #elif GFX_USE_OS_QT
     #include "gos_qt.h"
 #else
diff --git a/src/gos/gos.mk b/src/gos/gos.mk
index 80d832d9..d853cebf 100644
--- a/src/gos/gos.mk
+++ b/src/gos/gos.mk
@@ -14,6 +14,6 @@ GFXSRC +=   $(GFXLIB)/src/gos/gos_chibios.c	\
 			$(GFXLIB)/src/gos/gos_arduino.c \
 			$(GFXLIB)/src/gos/gos_cmsis.c \
 			$(GFXLIB)/src/gos/gos_nios.c \
+			$(GFXLIB)/src/gos/gos_zephyr.c \
 			$(GFXLIB)/src/gos/gos_x_threads.c \
 			$(GFXLIB)/src/gos/gos_x_heap.c
-
diff --git a/src/gos/gos_mk.c b/src/gos/gos_mk.c
index 62c51b68..b1615b8b 100644
--- a/src/gos/gos_mk.c
+++ b/src/gos/gos_mk.c
@@ -17,5 +17,6 @@
 #include "gos_cmsis.c"
 #include "gos_cmsis2.c"
 #include "gos_nios.c"
+#include "gos_zephyr.c"
 #include "gos_x_threads.c"
 #include "gos_x_heap.c"
diff --git a/src/gos/gos_options.h b/src/gos/gos_options.h
index 1c6dc8b1..319af5d5 100644
--- a/src/gos/gos_options.h
+++ b/src/gos/gos_options.h
@@ -118,6 +118,13 @@
 	#ifndef GFX_USE_OS_NIOS
 		#define GFX_USE_OS_NIOS			FALSE
 	#endif
+	/**
+	 * @brief   Use Zephyr
+	 * @details	Defaults to FALSE
+	 */
+	#ifndef GFX_USE_OS_ZEPHYR
+		#define GFX_USE_OS_ZEPHYR			FALSE
+	#endif
 	/**
 	 * @brief   Use Qt
 	 * @details	Defaults to FALSE
diff --git a/src/gos/gos_rules.h b/src/gos/gos_rules.h
index 08de1f3f..2ea1b1b2 100644
--- a/src/gos/gos_rules.h
+++ b/src/gos/gos_rules.h
@@ -16,11 +16,11 @@
 #ifndef _GOS_RULES_H
 #define _GOS_RULES_H
 
-#if !GFX_USE_OS_CHIBIOS && !GFX_USE_OS_WIN32 && !GFX_USE_OS_LINUX && !GFX_USE_OS_OSX && !GFX_USE_OS_RAW32 && !GFX_USE_OS_FREERTOS && !GFX_USE_OS_ECOS && !GFX_USE_OS_RAWRTOS && !GFX_USE_OS_ARDUINO && !GFX_USE_OS_CMSIS && !GFX_USE_OS_CMSIS2 && !GFX_USE_OS_KEIL && !GFX_USE_OS_RTX5 && !GFX_USE_OS_NIOS && !GFX_USE_OS_QT
+#if !GFX_USE_OS_CHIBIOS && !GFX_USE_OS_WIN32 && !GFX_USE_OS_LINUX && !GFX_USE_OS_OSX && !GFX_USE_OS_RAW32 && !GFX_USE_OS_FREERTOS && !GFX_USE_OS_ECOS && !GFX_USE_OS_RAWRTOS && !GFX_USE_OS_ARDUINO && !GFX_USE_OS_CMSIS && !GFX_USE_OS_CMSIS2 && !GFX_USE_OS_KEIL && !GFX_USE_OS_RTX5 && !GFX_USE_OS_NIOS && !GFX_USE_OS_ZEPHYR && !GFX_USE_OS_QT
 	#error "GOS: No operating system has been defined."
 #endif
 
-#if GFX_USE_OS_CHIBIOS + GFX_USE_OS_WIN32 + GFX_USE_OS_LINUX + GFX_USE_OS_OSX + GFX_USE_OS_RAW32 + GFX_USE_OS_FREERTOS + GFX_USE_OS_ECOS + GFX_USE_OS_RAWRTOS + GFX_USE_OS_ARDUINO + GFX_USE_OS_CMSIS + GFX_USE_OS_CMSIS2 + GFX_USE_OS_KEIL + GFX_USE_OS_RTX5 + GFX_USE_OS_NIOS + GFX_USE_OS_QT != 1 * TRUE
+#if GFX_USE_OS_CHIBIOS + GFX_USE_OS_WIN32 + GFX_USE_OS_LINUX + GFX_USE_OS_OSX + GFX_USE_OS_RAW32 + GFX_USE_OS_FREERTOS + GFX_USE_OS_ECOS + GFX_USE_OS_RAWRTOS + GFX_USE_OS_ARDUINO + GFX_USE_OS_CMSIS + GFX_USE_OS_CMSIS2 + GFX_USE_OS_KEIL + GFX_USE_OS_RTX5 + GFX_USE_OS_NIOS + GFX_USE_OS_ZEPHYR + GFX_USE_OS_QT != 1 * TRUE
 	#error "GOS: More than one operation system has been defined as TRUE."
 #endif
 
@@ -28,6 +28,10 @@
  	#error "GOS: GFX_FREERTOS_USE_TRACE is only available for the FreeRTOS port."
 #endif
 
+#if GFX_USE_OS_ZEPHYR && !defined(CONFIG_HEAP_MEM_POOL_SIZE)
+	#error "GOS: CONFIG_HEAP_MEM_POOL_SIZE must be defined to use the Zephyr port."
+#endif
+
 #if GFX_EMULATE_MALLOC
 	#if GFX_USE_OS_WIN32 || GFX_USE_OS_LINUX || GFX_USE_OS_OSX || GFX_USE_OS_ECOS || \
 			(GFX_OS_HEAP_SIZE == 0 && (GFX_USE_OS_RAW32 || GFX_USE_OS_ARDUINO || GFX_USE_OS_CMSIS || GFX_USE_OS_CMSIS2 || GFX_USE_OS_KEIL || GFX_USE_OS_RTX5))
diff --git a/src/gos/gos_zephyr.c b/src/gos/gos_zephyr.c
new file mode 100644
index 00000000..401d9f6a
--- /dev/null
+++ b/src/gos/gos_zephyr.c
@@ -0,0 +1,18 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+#include "../../gfx.h"
+
+#if GFX_USE_OS_ZEPHYR
+
+systemticks_t gfxSystemTicks(void)
+{
+	s32_t ms = k_uptime_get_32();
+	return CONFIG_SYS_CLOCK_TICKS_PER_SEC*ms/1000;
+}
+
+#endif // GFX_USE_OS_ZEPHYR
diff --git a/src/gos/gos_zephyr.h b/src/gos/gos_zephyr.h
new file mode 100644
index 00000000..d5bb743a
--- /dev/null
+++ b/src/gos/gos_zephyr.h
@@ -0,0 +1,117 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    src/gos/gos_zepyhr.h
+ * @brief   GOS - Operating System Support header file for Zephyr RTOS.
+ *			Zephyr SDK 0.9.1
+ */
+
+#ifndef _GOS_ZEPHYR_H
+#define _GOS_ZEPHYR_H
+
+#if GFX_USE_OS_ZEPHYR
+
+// #include <stdbool.h>
+// #include <stdint.h>
+
+#include <zephyr.h>
+
+	/*===========================================================================*/
+	/* Type definitions                                                          */
+	/*===========================================================================*/
+
+	typedef bool	bool_t;
+	typedef s8_t	int8_t;
+	typedef u8_t	uint8_t;
+	typedef s16_t	int16_t;
+	typedef u16_t	uint16_t;
+	typedef s32_t	int32_t;
+	typedef u32_t	uint32_t;
+
+	// typedef unsigned long	size_t;
+	typedef s32_t 	delaytime_t;
+	typedef u32_t	systemticks_t;
+	typedef u32_t	semcount_t;
+	typedef void	threadreturn_t;
+	typedef int	threadpriority_t;
+
+	#define DECLARE_THREAD_FUNCTION(fnName, param)\
+		threadreturn_t fnName(void* param, void* p2, void* p3)
+
+	#define DECLARE_THREAD_STACK(name, sz)\
+		K_THREAD_STACK_DEFINE(name, sz)
+
+	#define THREAD_RETURN(retval)		return
+
+	// #define FALSE			0
+	// #define TRUE				1
+	#define TIME_IMMEDIATE			K_NO_WAIT
+	#define TIME_INFINITE			K_FOREVER
+	#define MAX_SEMAPHORE_COUNT		((semcount_t)(((unsigned long)((semcount_t)(-1))) >> 1))
+	#define LOW_PRIORITY			CONFIG_NUM_PREEMPT_PRIORITIES-1
+	#define NORMAL_PRIORITY			1
+	#define HIGH_PRIORITY			0
+
+	typedef struct k_sem gfxSem;
+
+	typedef struct k_mutex gfxMutex;
+
+	typedef k_tid_t gfxThreadHandle;
+
+	/*===========================================================================*/
+	/* Function declarations.                                                    */
+	/*===========================================================================*/
+
+	#ifdef __cplusplus
+	extern "C" {
+	#endif
+
+	#define gfxHalt(msg)	do{}while(0)
+	#define gfxExit()		do{}while(0)
+
+	// Don't forget to set CONFIG_HEAP_MEM_POOL_SIZE
+	 #define gfxAlloc(sz)					k_malloc(sz)
+	 #define gfxFree(ptr)					k_free(ptr)
+	 #define gfxRealloc(ptr, oldsz, newsz)	do{}while(0)
+
+	 #define gfxYield()						k_yield()
+	 #define gfxSleepMilliseconds(ms)		k_sleep(ms)
+	 #define gfxSleepMicroseconds(us)		do{}while(0)
+	 #define gfxMillisecondsToTicks(ms)		CONFIG_SYS_CLOCK_TICKS_PER_SEC*ms/1000
+	 systemticks_t gfxSystemTicks();
+
+	 #define gfxSystemLock()		k_sched_lock()
+	 #define gfxSystemUnlock()		k_sched_unlock()
+
+	 #define gfxMutexInit(pmutex)		k_mutex_init(pmutex)
+	 #define gfxMutexDestroy(pmutex)	do{}while(0)
+	 #define gfxMutexEnter(pmutex)		k_mutex_lock(pmutex, K_FOREVER)
+	 #define gfxMutexExit(pmutex)		k_mutex_unlock(pmutex)
+
+	 #define gfxSemInit(psem, val, limit) 	k_sem_init(psem, val, limit)
+	 #define gfxSemDestroy(psem)			do{}while(0)
+	 #define gfxSemWait(psem, ms)  			(k_sem_take(psem, ms) == 0) ? TRUE : FALSE
+	 #define gfxSemWaitI(psem) 				(k_sem_take(psem, K_NO_WAIT) == 0) ? TRUE : FALSE
+	 #define gfxSemSignal(psem)				k_sem_give(psem)
+	 #define gfxSemSignalI(psem)			k_sem_give(psem)
+	 #define gfxSemCounter(psem)			k_sem_count_get(psem)
+	 #define gfxSemCounterI(psem)			k_sem_count_get(psem)
+
+	#define gfxThreadCreate(stackarea, stacksz, prio, fn, param)\
+		k_thread_spawn(stackarea, stacksz, fn, param, NULL, NULL, prio, 0, K_NO_WAIT)
+	#define gfxThreadWait(thread)		0
+	#define gfxThreadMe()				k_current_get()
+	#define gfxThreadClose(thread)		k_thread_abort(thread)
+
+	#ifdef __cplusplus
+	}
+	#endif
+
+#endif /* GFX_USE_OS_ZEPHYR */
+#endif /* _GOS_H */
+/** @} */