C72 may refer to: Ruy Lopez chess openings ECO code Malignant neoplasm of spinal cord, cranial nerves and other parts of central nervous system ICD-10 code Siemens C72, a mobile phone Honda C71, C76, C72, C77 Dream, motorcycle different models Paid Vacations (Seafarers) Convention, 1946 code Caldwell 72 (NGC 55), a barred irregular galaxy in the constellation Sculptor GER Class C72, a class of British steam locomotives