diff --git a/keyboards/chosfox/cf81/keymaps/via/keymap.c b/keyboards/chosfox/cf81/keymaps/via/keymap.c
new file mode 100644
index 00000000..753bdebc
--- /dev/null
+++ b/keyboards/chosfox/cf81/keymaps/via/keymap.c
@@ -0,0 +1,71 @@
+/* Copyright (C) 2023 jonylee@hfd
+ *
+ * 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
+
+enum __layers {
+    WIN_B,
+    WIN_FN,
+    MAC_B,
+    MAC_FN
+};
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [WIN_B] = LAYOUT( /* Base */
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11, KC_F12,   KC_DEL,           KC_MUTE,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS,KC_EQL,   KC_BSPC,          KC_HOME,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,KC_RBRC,  KC_BSLS,          KC_PGUP,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,KC_NUHS,  KC_ENT,           KC_PGDN,
+        KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,          KC_RSFT, KC_UP,
+        KC_LCTL, KC_LGUI, KC_LALT,                   KC_SPC,                             KC_RALT, MO(WIN_FN),KC_RCTL,        KC_LEFT, KC_DOWN, KC_RGHT),
+
+
+    [WIN_FN] = LAYOUT( /* FN */
+        _______, KC_MSEL, KC_VOLD, KC_VOLU, KC_MUTE, KC_MSTP, KC_MPRV, KC_MPLY, KC_MNXT, KC_MAIL, KC_WHOM, KC_CALC, KC_WSCH, KC_INS,            _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_SPD, RGB_SPI, RGB_TOG,           KC_END,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_SAD, RGB_SAI, RGB_MOD,           _______,
+        _______, _______,DF(MAC_B),_______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_MOD, _______,           _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______,  RGB_VAI,
+        _______, GU_TOGG, _______,                   EE_CLR,                             _______, _______, _______,          RGB_HUD,  RGB_VAD, RGB_HUD),
+
+    [MAC_B] = LAYOUT( /* Base */
+        KC_ESC,  KC_BRID, KC_BRIU, KC_MCTL, KC_LPAD, KC_F5,   KC_F6,   KC_MPRV, KC_MPLY, KC_MNXT, KC_MUTE, KC_VOLD,KC_VOLU,  KC_DEL,           KC_MUTE,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS,KC_EQL,   KC_BSPC,          KC_HOME,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,KC_RBRC,  KC_BSLS,          KC_PGUP,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,KC_NUHS,  KC_ENT,           KC_PGDN,
+        KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,          KC_RSFT, KC_UP,
+        KC_LCTL, KC_LALT, KC_LGUI,                   KC_SPC,                             KC_RGUI, MO(MAC_FN),KC_RCTL,        KC_LEFT, KC_DOWN, KC_RGHT),
+
+    [MAC_FN] = LAYOUT( /* FN */
+        _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,  KC_F9,    KC_F10,  KC_F11,  KC_F12,  KC_INS,            _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_SPD, RGB_SPI, RGB_TOG,           KC_END,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_SAD, RGB_SAI, RGB_MOD,           _______,
+        _______,DF(WIN_B),_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_MOD, _______,           _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______,  RGB_VAI,
+        _______, _______, _______,                   EE_CLR,                             _______, _______, _______,          RGB_HUD,  RGB_VAD, RGB_HUD)
+};
+
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [WIN_B] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },
+    [WIN_FN] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },
+    [MAC_B] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },
+    [MAC_FN] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) }
+};
+#endif
+
diff --git a/keyboards/chosfox/cf81/keymaps/via/rules.mk b/keyboards/chosfox/cf81/keymaps/via/rules.mk
new file mode 100644
index 00000000..f1adcab0
--- /dev/null
+++ b/keyboards/chosfox/cf81/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+ENCODER_MAP_ENABLE = yes