Lummis is a surname, and may refer to:
- Ben Lummis (b. 1978), New Zealand pop and R&B singer
- Charles Fletcher Lummis (1859–1928), American journalist, historian, and poet
- Cynthia Lummis (b. 1954), American politician, U.S. House of Representatives (County of Wyoming); state treasurer 1999–2007
- Dayton Lummis (1903-1988), American actor
- Mark Lummis (b. 1967), Canadian artist: author and painter
- Suzanne Lummis (b. 1951), American poet; granddaughter of Charles Fletcher Lummis
- Trevor Lummis (contemporary), English writer and historian
- William Lummis (1886–1985), British Anglican Church clergyman and historian
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