Ott is a surname and an Estonian masculine given name (meaning "Bear" but also the Estonian version of the German name, Otto). People with the name include:
B
- Billy Ott (1940–2015), American baseball player
- Bobby Ott (born 1962), American speedway rider
- Brad Ott (born 1969), American golfer
E
- Ed Ott (1951–2024), American baseball player
- Elsie Ott (1913–2006), recipient of the Air Medal
- Eugen Ott (1889–1977), German diplomat
- Eugen Ott (1890–1966), German military commander
J
- Jeff Ott (born 1970), American punk rock musician
- Jim Ott (born 1947), American politician
- John Ott (1909–2000), American photographer
- Jonathan Ott (born 1949), American ethnobotanist and author
- Jürg Ott, Swiss geneticist
K
- Kerstin Ott (born 1982), German singer, songwriter, guitarist and DJ
- Konrad Ott (born 1959), German philosopher
- Ott (born 1968), English record producer
- Ott Aardam (born 1980), Estonian actor
- Ott Arder (1950–2004), Estonian poet and writer
- Ott Jud (fl. 15th century), Jewish Austrian martial arts master
- Ott Kadarik (born 1976), Estonian architect
- Ott-Heinrich Keller (1906–1990), German mathematician
- Ott Lepland (born 1987), Estonian singer
- Ott Lumi (born 1978), Estonian politician
- Ott Reinumäe (born 1984), Estonian footballer
- Ott Sepp (born 1982), Estonian actor
- Ott Tänak (born 1987), Estonian rally driver
- G. Ott Romney (1892–1973), American basketball coach
- Paul Ott Carruth, American football player
- Vernon "Ott" Motley, elder African-American stevedore featured on HBO's The Wire. It is he who is set to take over as treasurer for the union at the end of the show's second season.
- Otepää - an Estonian town with a name meaning "Ott's Head" or "Bear's Head".