diff --git a/keyboards/mwstudio/mmk_3/config.h b/keyboards/mwstudio/mmk_3/config.h
new file mode 100644
index 0000000000..0265d3ed6e
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/config.h
@@ -0,0 +1,26 @@
+/* Copyright 2023 TW59420 <https://github.com/TW59420>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define RGBLIGHT_LAYERS
+#define RGBLIGHT_DEFAULT_MODE RGBLIGHT_MODE_RAINBOW_SWIRL + 5
+
+#define WS2812_PWM_DRIVER PWMD4
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA1_STREAM7
+#define WS2812_DMA_CHANNEL 2
diff --git a/keyboards/mwstudio/mmk_3/halconf.h b/keyboards/mwstudio/mmk_3/halconf.h
new file mode 100644
index 0000000000..0af31c5735
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/halconf.h
@@ -0,0 +1,22 @@
+/* Copyright 2022 TW59420 <https://github.com/TW59420>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>
+
diff --git a/keyboards/mwstudio/mmk_3/info.json b/keyboards/mwstudio/mmk_3/info.json
new file mode 100644
index 0000000000..c63bd69f62
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/info.json
@@ -0,0 +1,53 @@
+{
+ "manufacturer": "MWStudio",
+ "keyboard_name": "MMK_3",
+ "maintainer": "TW59420",
+ "bootloader": "stm32duino",
+ "diode_direction": "ROW2COL",
+ "features": {
+ "bootmagic": true,
+ "extrakey": true,
+ "mousekey": false,
+ "nkro": true,
+ "rgblight": true
+ },
+ "matrix_pins": {
+ "cols": ["A3", "A4", "A5"],
+ "rows": ["A6"]
+ },
+ "processor": "STM32F103",
+ "rgblight": {
+ "animations": {
+ "alternating": true,
+ "breathing": true,
+ "christmas": true,
+ "knight": true,
+ "rainbow_mood": true,
+ "rainbow_swirl": true,
+ "snake": true,
+ "static_gradient": true,
+ "twinkle": true
+ },
+ "hue_steps": 10,
+ "led_count": 5
+ },
+ "url": "",
+ "usb": {
+ "device_version": "1.0.0",
+ "pid": "0x3001",
+ "vid": "0x7BA1"
+ },
+ "ws2812": {
+ "driver": "pwm"
+ "pin": "B8",
+ },
+ "layouts": {
+ "LAYOUT": {
+ "layout": [
+ { "matrix": [0, 0], "x": 0, "y": 0 },
+ { "matrix": [0, 1], "x": 1, "y": 0 },
+ { "matrix": [0, 2], "x": 2, "y": 0 }
+ ]
+ }
+ }
+}
diff --git a/keyboards/mwstudio/mmk_3/keymaps/default/keymap.c b/keyboards/mwstudio/mmk_3/keymaps/default/keymap.c
new file mode 100644
index 0000000000..b4cc8ae315
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/keymaps/default/keymap.c
@@ -0,0 +1,26 @@
+/* Copyright 2023 TW59420 <https://github.com/TW59420>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+ [0] = LAYOUT(LT(3, KC_LCTL), LT(1, KC_C), LT(2, KC_V)),
+
+ [1] = LAYOUT(RGB_VAD, KC_TRNS, RGB_VAI),
+
+ [2] = LAYOUT(RGB_SAD, RGB_SAI, KC_TRNS),
+
+ [3] = LAYOUT(KC_TRNS, RGB_HUD, RGB_HUI)};
diff --git a/keyboards/mwstudio/mmk_3/keymaps/via/keymap.c b/keyboards/mwstudio/mmk_3/keymaps/via/keymap.c
new file mode 100644
index 0000000000..c48cc10e36
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/keymaps/via/keymap.c
@@ -0,0 +1,47 @@
+/* Copyright 2023 TW59420 <https://github.com/TW59420>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+
+const rgblight_segment_t PROGMEM my_layer0_dfu[] = RGBLIGHT_LAYER_SEGMENTS({3, 2, HSV_WHITE});
+const rgblight_segment_t PROGMEM my_layer1_val[] = RGBLIGHT_LAYER_SEGMENTS({3, 2, HSV_BLUE});
+const rgblight_segment_t PROGMEM my_layer2_sat[] = RGBLIGHT_LAYER_SEGMENTS({3, 2, HSV_PURPLE});
+const rgblight_segment_t PROGMEM my_layer3_hue[] = RGBLIGHT_LAYER_SEGMENTS({3, 2, HSV_RED});
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+ [0] = LAYOUT(LT(3, KC_LCTL), LT(1, KC_C), LT(2, KC_V)),
+
+ [1] = LAYOUT(RGB_VAD, KC_TRNS, RGB_VAI),
+
+ [2] = LAYOUT(RGB_SAD, RGB_SAI, KC_TRNS),
+
+ [3] = LAYOUT(KC_TRNS, RGB_HUD, RGB_HUI)};
+
+const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(my_layer0_dfu, my_layer1_val, my_layer2_sat, my_layer3_hue);
+
+void keyboard_post_init_user(void) {
+ // Enable the LED layers
+ rgblight_layers = my_rgb_layers;
+}
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+ rgblight_set_layer_state(0, layer_state_cmp(state, 0));
+ rgblight_set_layer_state(1, layer_state_cmp(state, 1));
+ rgblight_set_layer_state(2, layer_state_cmp(state, 2));
+ rgblight_set_layer_state(3, layer_state_cmp(state, 3));
+ return state;
+}
diff --git a/keyboards/mwstudio/mmk_3/keymaps/via/rules.mk b/keyboards/mwstudio/mmk_3/keymaps/via/rules.mk
new file mode 100644
index 0000000000..36b7ba9cbc
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
diff --git a/keyboards/mwstudio/mmk_3/mcuconf.h b/keyboards/mwstudio/mmk_3/mcuconf.h
new file mode 100644
index 0000000000..fb1d1e81f6
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/mcuconf.h
@@ -0,0 +1,23 @@
+/* Copyright 2023 TW59420 <https://github.com/TW59420>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_TIM4
+#define STM32_PWM_USE_TIM4 TRUE
+
+
diff --git a/keyboards/mwstudio/mmk_3/readme.md b/keyboards/mwstudio/mmk_3/readme.md
new file mode 100644
index 0000000000..997dbc382a
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/readme.md
@@ -0,0 +1,22 @@
+# 3Key
+
+
+
+Support APM32F103C8T6 keyboard.
+
+* Keyboard Maintainer: [TW59420](https://github.com/TW59420)
+* Hardware Supported: APM32F103C8T6
+
+Make example for this keyboard (after setting up your build environment):
+
+ make mwstudio/mmk_3:default
+
+Flashing example for this keyboard:
+
+ make mwstudio/mmk_3:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+* **Physical reset button**: Short press the button on the back of the PCB to enter the Bootloader and flash the firmware
+* **Keycode in layout**: Press the key mapped to RESET if it is available
diff --git a/keyboards/mwstudio/mmk_3/rules.mk b/keyboards/mwstudio/mmk_3/rules.mk
new file mode 100644
index 0000000000..7ff128fa69
--- /dev/null
+++ b/keyboards/mwstudio/mmk_3/rules.mk
@@ -0,0 +1 @@
+# This file intentionally left blank
\ No newline at end of file