diff --git a/include/sway/commands.h b/include/sway/commands.h
index d975876e2..2c5a63d40 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -117,6 +117,7 @@ sway_cmd cmd_input;
 sway_cmd cmd_seat;
 sway_cmd cmd_ipc;
 sway_cmd cmd_kill;
+sway_cmd cmd_lock;
 sway_cmd cmd_layout;
 sway_cmd cmd_log_colors;
 sway_cmd cmd_mark;
diff --git a/include/sway/idle.h b/include/sway/idle.h
index 7b9228fc2..e2a22e7e6 100644
--- a/include/sway/idle.h
+++ b/include/sway/idle.h
@@ -4,4 +4,5 @@
 
 void idle_setup_seat(struct sway_server *server, struct sway_seat *seat);
 bool idle_init(struct sway_server *server);
+void invoke_swaylock();
 #endif
diff --git a/sway/commands.c b/sway/commands.c
index 40c6ec3da..ce696344f 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -167,6 +167,7 @@ static struct cmd_handler command_handlers[] = {
 	{ "focus", cmd_focus },
 	{ "kill", cmd_kill },
 	{ "layout", cmd_layout },
+	{ "lock", cmd_lock },
 	{ "move", cmd_move },
 	{ "opacity", cmd_opacity },
 	{ "reload", cmd_reload },
diff --git a/sway/commands/lock.c b/sway/commands/lock.c
new file mode 100644
index 000000000..b4495ad65
--- /dev/null
+++ b/sway/commands/lock.c
@@ -0,0 +1,11 @@
+#include <wlr/util/log.h>
+#include "log.h"
+#include "sway/commands.h"
+#include "sway/idle.h"
+
+struct cmd_results *cmd_lock(int argc, char **argv) {
+
+	invoke_swaylock();
+
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
diff --git a/sway/meson.build b/sway/meson.build
index 9c23332a6..f85bc43a3 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -37,6 +37,7 @@ sway_sources = files(
 	'commands/focus_follows_mouse.c',
 	'commands/fullscreen.c',
 	'commands/kill.c',
+	'commands/lock.c',
 	'commands/opacity.c',
 	'commands/include.c',
 	'commands/input.c',