Addams is a patronymic surname of English origin from the given name Adam. There are other spellings. Notable people with the surname include:
- Calpernia Addams (born 1971), American transgender author, actress, and activist
- Christian Hejnal Addams (born 1969), American producer and musician
- Charles Addams (1912–1988), American cartoonist, author of "The Addams Family"
- Dawn Addams (1930–1985), English actress
- Jane Addams (1860–1935), American founder of the Settlement House movement
- Jessicka Addams (born 1975), Italian-American artist, musician, and activist
- Olivia Addams (born 1996), Romanian singer
- William Addams (1777–1858), American politician, U.S. representative from Pennsylvania
Fictional characters:
- “The Addams Family”, American print cartoon by Charles Addams; and television series, films, and video games based on the cartoon