diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index 02dcd4b..77f15de 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -575,6 +575,8 @@ def _rk3566_id(self) -> Optional[str]:
             board = boards.LUBANCAT1
         if board_value and "Radxa CM3 IO" in board_value:
             board = boards.RADXA_CM3
+        if board_value and "Radxa ROCK3 Model C" in board_value:
+            board = boards.ROCK_PI_3C
         if board_value and "Rockchip RK3566 OPi 3B" in board_value:
             board = boards.ORANGE_PI_3B
         if board_value and "Hardkernel ODROID-M1S" in board_value:
diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index 472b2b7..fca93e9 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -194,6 +194,7 @@
 RADXA_CM3 = "RADXA_CM3"
 
 ROCK_PI_3A = "ROCK_PI_3A"
+ROCK_PI_3C = "ROCK_PI_3C"
 ROCK_PI_S = "ROCK_PI_S"
 ROCK_PI_4 = "ROCK_PI_4"
 ROCK_PI_4_C_PLUS = "ROCK_PI_4C+"
@@ -527,6 +528,7 @@
     ROCK_PI_5,
     RADXA_CM3,
     ROCK_PI_3A,
+    ROCK_PI_3C,
 )
 
 # UDOO