The C Scow is an American sailing dinghy that was designed by John O. Johnson as a one-design racer and first built as early as 1905.

[1][2] The design was in initially built by Johnson Boat Works of White Bear Lake, Minnesota, United States and, starting in 1945 by Melges Performance Sailboats of Zenda, Wisconsin.

[1][2] The boat has a draft of 3.30 ft (1.01 m) with one centerboard extended and 2.5 in (6.4 cm) with both retracted, allowing beaching or ground transportation on a trailer.

The boat's forestays can be adjusted while sailing, controlled by a lever mounted aft of the boom vang's recessed radial track.

[2] The design is regulated and racing organized by a class club, the National C Scow Sailing Association.