Williams Peak is a prominent peak over 1,400 m in a nodal position between the drainage of the Hobbs, Salmon and Garwood Glaciers, in Victoria Land. Named by the Victoria University of Wellington Antarctic Expedition (1960–61) for Dr. J. Williams, Vice-Chancellor of the University.

• Tommy Cairns
• Tommy Cairo
• Tommy Calandro
• Tommy Caldwell (musician)
• Tommy Campbell (footballer)
• Tommy Can You Hear Me?
• Tommy Carcetti
• Tommy Carlsson
• Tommy Carr (Gaelic footballer)
• Tommy Carroll (footballer)
• Tommy Casanova
• Tommy Caton
• Tommy Cavanagh
• Tommy C. Douglas
• Tommy Chesbro
• Tommy Clinton
• Tommy Clufetos
• Tommy Cod
• Tommy Cole
• Tommy Colella
• Tommy Collins (filmmaker)
• Tommy Comerford
• Tommy (comics)
• Tommy Connolly
• Tommy Conroy