C77 may refer to: Ruy Lopez chess openings ECO code Honda C71, C76, C72, C77 Dream, motorcycle different models Secondary and unspecified malignant neoplasm of lymph nodes ICD-10 code London Underground C69 and C77 Stock trains Honda C77, a motorcycle Oil Fuel Hulk C77, other name of Poplar Grove Airport FAA LID Medical Examination of Young Persons (Industry) Convention, 1946 code Caldwell 77 (Centaurus A), a galaxy in the constellation Centaurus
C-77 may refer to: C-77 (Michigan county highway) Cessna C-77, a four seats utility and cargo transport aircraft