C66 or C-66 may refer to:
- C-66 (Michigan county highway)
- Berlin Defence (chess), a chess opening
- Caldwell 66, a globular cluster
- Caudron C.66, a French biplane
- HMCS Uganda (C66), later renamed HMCS Quebec, a Fiji-class cruiser of the Royal Canadian Navy
- Lockheed C-66 Lodestar, an American transport aircraft
- Migration for Employment Convention, 1939 of the International Labour Organization
- Siemens C66, a mobile phone
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.