diff --git a/drivers/pinmux/stm32/pinmux_stm32.h b/drivers/pinmux/stm32/pinmux_stm32.h
index 9b7eb6e5433..cb54a94ed19 100644
--- a/drivers/pinmux/stm32/pinmux_stm32.h
+++ b/drivers/pinmux/stm32/pinmux_stm32.h
@@ -115,6 +115,8 @@ void stm32_setup_pins(const struct pin_config *pinconf,
 #include "pinmux_stm32l0.h"
 #elif CONFIG_SOC_SERIES_STM32L4X
 #include "pinmux_stm32l4x.h"
+#elif CONFIG_SOC_SERIES_STM32WBX
+#include "pinmux_stm32wbx.h"
 #endif
 
 #endif	/* ZEPHYR_DRIVERS_PINMUX_STM32_PINMUX_STM32_H_ */
diff --git a/drivers/pinmux/stm32/pinmux_stm32wbx.h b/drivers/pinmux/stm32/pinmux_stm32wbx.h
new file mode 100644
index 00000000000..e79a1d5befc
--- /dev/null
+++ b/drivers/pinmux/stm32/pinmux_stm32wbx.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _STM32WBX_PINMUX_H_
+#define _STM32WBX_PINMUX_H_
+
+/**
+ * @file Header for STM32WBX pin multiplexing helper
+ */
+
+/* Port A */
+#define STM32WBX_PINMUX_FUNC_PA2_LPUART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_PULLUP)
+#define STM32WBX_PINMUX_FUNC_PA3_LPUART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_NOPULL)
+#define STM32WBX_PINMUX_FUNC_PA9_USART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_7 | STM32_PUSHPULL_PULLUP)
+#define STM32WBX_PINMUX_FUNC_PA10_USART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_7 | STM32_PUPDR_NO_PULL)
+#define STM32WBX_PINMUX_FUNC_PA12_LPUART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_NOPULL)
+
+/* Port B */
+#define STM32WBX_PINMUX_FUNC_PB5_LPUART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_PULLUP)
+#define STM32WBX_PINMUX_FUNC_PB6_USART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_7 | STM32_PUSHPULL_PULLUP)
+#define STM32WBX_PINMUX_FUNC_PB7_USART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_7 | STM32_PUPDR_NO_PULL)
+#define STM32WBX_PINMUX_FUNC_PB10_LPUART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_NOPULL)
+#define STM32WBX_PINMUX_FUNC_PB11_LPUART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_PULLUP)
+
+/* Port C */
+#define STM32WBX_PINMUX_FUNC_PC0_LPUART1_RX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_NOPULL)
+#define STM32WBX_PINMUX_FUNC_PC1_LPUART1_TX  \
+	(STM32_PINMUX_ALT_FUNC_8 | STM32_PUSHPULL_PULLUP)
+
+/* Port D */
+
+/* Port E */
+
+/* Port H */
+
+#endif /* _STM32WBX_PINMUX_H_ */