C63 or C-63 may refer to:
- Caldwell 63, a planetary nebula
- Convention concerning Statistics of Wages and Hours of Work, 1938 of the International Labour Organization
- JNR Class C63, a proposed Japanese steam locomotive
- Lockheed C-63 Hudson, an American military transport aircraft
- Mercedes-AMG C 63, a German automobile
- Ruy Lopez, a chess opening
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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