Cressy or de Cressy is a surname. Notable people with the name include:
Wikimedia Commons has media related to Cressy (surname).
- David Cressy, American historian and professor
- Gordon Cressy (b. 1943), Canadian politician
- Harold Cressy (1889–1916), South African headteacher and activist
- Hugh de Cressy (d. 1189), Anglo-Norman administrator and nobleman
- Hugh Cressy (MP), Member of Parliament for Nottinghamshire
- Joe Cressy, (b. 1984), Canadian politician
- Maxime Cressy (b. 1997), American tennis player
- Serenus de Cressy (c. 1605–1674), English monk
- Will Cressy (1863–1930), American vaudeville comedian and playwright