diff --git a/include/logging/log_ctrl.h b/include/logging/log_ctrl.h
index ef61fa06398..6a5bf9ed6c2 100644
--- a/include/logging/log_ctrl.h
+++ b/include/logging/log_ctrl.h
@@ -210,6 +210,17 @@ static inline bool log_data_pending(void)
 	return false;
 }
 
+/**
+ * @brief Configure tag used to prefix each message.
+ *
+ * @param tag Tag.
+ *
+ * @retval 0 on successful operation.
+ * @retval -ENOTSUP if feature is disabled.
+ * @retval -ENOMEM if string is longer than the buffer capacity. Tag will be trimmed.
+ */
+int log_set_tag(const char *tag);
+
 #if defined(CONFIG_LOG) && !defined(CONFIG_LOG_MODE_MINIMAL)
 #define LOG_CORE_INIT() log_core_init()
 #define LOG_INIT() log_init()
diff --git a/include/logging/log_internal.h b/include/logging/log_internal.h
index 163fa879365..c9453edd9cd 100644
--- a/include/logging/log_internal.h
+++ b/include/logging/log_internal.h
@@ -95,6 +95,12 @@ void z_log_msg2_free(union log_msg2_generic *msg);
  */
 bool z_log_msg2_pending(void);
 
+/** @brief Get tag.
+ *
+ * @return Tag. Null if feature is disabled.
+ */
+const char *z_log_get_tag(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/subsys/logging/Kconfig.formatting b/subsys/logging/Kconfig.formatting
index 3000b4b4236..04cd5542533 100644
--- a/subsys/logging/Kconfig.formatting
+++ b/subsys/logging/Kconfig.formatting
@@ -63,7 +63,22 @@ if LOG_BACKEND_SHOW_COLOR
 config LOG_INFO_COLOR_GREEN
 	bool "Use green color for info level logs"
 
-endif
+endif # LOG_BACKEND_SHOW_COLOR
+
+config LOG_TAG_MAX_LEN
+	int "Tag max length"
+	default 0
+	range 0 64
+	help
+	  Setting non-zero value enables option to specify a tag which is
+	  prepended to each log message. Tag can be changed at runtime.
+
+config LOG_TAG_DEFAULT
+	string "Default tag"
+	depends on LOG_TAG_MAX_LEN > 0
+	default ""
+	help
+	  Initial tag.
 
 config LOG_BACKEND_FORMAT_TIMESTAMP
 	bool "Enable timestamp formatting in the backend"
diff --git a/subsys/logging/log_core.c b/subsys/logging/log_core.c
index c60ac487153..38308157afd 100644
--- a/subsys/logging/log_core.c
+++ b/subsys/logging/log_core.c
@@ -109,6 +109,14 @@ static const struct mpsc_pbuf_buffer_config mpsc_config = {
 		MPSC_PBUF_MODE_OVERWRITE : 0
 };
 
+/* Check that default tag can fit in tag buffer. */
+COND_CODE_0(CONFIG_LOG_TAG_MAX_LEN, (),
+	(BUILD_ASSERT(sizeof(CONFIG_LOG_TAG_DEFAULT) <= CONFIG_LOG_TAG_MAX_LEN + 1,
+		      "Default string longer than tag capacity")));
+
+static char tag[CONFIG_LOG_TAG_MAX_LEN + 1] =
+	COND_CODE_0(CONFIG_LOG_TAG_MAX_LEN, ({}), (CONFIG_LOG_TAG_DEFAULT));
+
 bool log_is_strdup(const void *buf);
 static void msg_process(union log_msgs msg, bool bypass);
 
@@ -1215,6 +1223,35 @@ bool z_log_msg2_pending(void)
 	return mpsc_pbuf_is_pending(&log_buffer);
 }
 
+const char *z_log_get_tag(void)
+{
+	return CONFIG_LOG_TAG_MAX_LEN > 0 ? tag : NULL;
+}
+
+int log_set_tag(const char *str)
+{
+	if (CONFIG_LOG_TAG_MAX_LEN == 0) {
+		return -ENOTSUP;
+	}
+
+	if (str == NULL) {
+		return -EINVAL;
+	}
+
+	size_t len = strlen(str);
+	size_t cpy_len = MIN(len, CONFIG_LOG_TAG_MAX_LEN);
+
+	memcpy(tag, str, cpy_len);
+	tag[cpy_len] = '\0';
+
+	if (cpy_len < len) {
+		tag[cpy_len - 1] = '~';
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
 static void log_process_thread_timer_expiry_fn(struct k_timer *timer)
 {
 	k_sem_give(&log_process_thread_sem);
diff --git a/subsys/logging/log_output.c b/subsys/logging/log_output.c
index 9d0b0ee11a4..e6442bf0e7c 100644
--- a/subsys/logging/log_output.c
+++ b/subsys/logging/log_output.c
@@ -495,6 +495,7 @@ static uint32_t prefix_print(const struct log_output *output,
 	bool stamp = flags & LOG_OUTPUT_FLAG_TIMESTAMP;
 	bool colors_on = flags & LOG_OUTPUT_FLAG_COLORS;
 	bool level_on = flags & LOG_OUTPUT_FLAG_LEVEL;
+	const char *tag = z_log_get_tag();
 
 	if (IS_ENABLED(CONFIG_LOG_BACKEND_NET) &&
 	    flags & LOG_OUTPUT_FLAG_FORMAT_SYSLOG) {
@@ -512,6 +513,10 @@ static uint32_t prefix_print(const struct log_output *output,
 			level_to_rfc5424_severity(level));
 	}
 
+	if (tag) {
+		length += print_formatted(output, "%s ", tag);
+	}
+
 	if (stamp) {
 		length += timestamp_print(output, flags, timestamp);
 	}