Ash is both a given name (commonly a shortened version of Ashton, Ashley, and Ashlyn) and a surname. The name is gender neutral.

Notable people and fictional characters with the name include:

• Ash Amin (born 1955), British geographer
• Ash Atalla (born 1972), British television producer
• Ash Baron-Cohen (born 1967), British film director, usually credited as "Ash"
• Ashleigh Barty (born 1996), Australian tennis player
• Ash Bowie (born c. 1968), American indie musician
• Ash Carter (1954–2022), American physicist, professor, and former U.S. Secretary of Defense
• Ash Gordon, American singer-songwriter
• Ash Holme (born 1996), English media personality
• Ash London, Australian radio and television personality
• Ash Palmisciano (born 1990), English actor
• Ash Pollard (born 1986), Australian cook, author, television and radio personality
• Ash Regan (born 1974), Scottish politician
• Ash or Aishu, nickname of Indian actress Aishwarya Rai Bachchan (born 1973)

• Ash, the protagonist of fantasy novel Ash: A Secret History
• Ash (Alien), an android in the 1979 science fiction horror film Alien
• Ash (Avalon), the main protagonist in the 2001 science fiction film Avalon
• Ash (Echo), a character portrayed by Tasya Teles in the TV series The 100
• Ash, a character in the manga and anime series MÄR
• Ash, a character in the animated films Sing and Sing 2
• Ash (Ninjago), a character in Ninjago
• Ash, a character who is Marceline the Vampire Queen's ex-boyfriend in the animated series Adventure Time
• Ash (Supernatural), a recurring character on the TV series Supernatural
• Ash, a character in the Titanfall series
• Ash Crimson, one of the protagonists of the King of Fighters video game series
• Ash Dove, a recurring character in the TV series H₂O: Just Add Water
• Ash Fox, the son of Mr. Fox in the animated film Fantastic Mr. Fox
• Ash Kaur, a character from EastEnders
• Ash Ketchum, the original main protagonist of Pokémon the Series
• Ash Lynx, the main character of the manga and anime series Banana Fish
• Ash Tyler, the chief of security of the USS Discovery in the TV series Star Trek: Discovery
• Ash Williams, the hero of the Evil Dead film series
• Ash Graven, supporting protagonist in the animated sci-fi series Final Space
• Ash, an epic brawler from mobile game Brawl Stars
• Ash, the protagonist of the 2017 video game The End is Nigh

• Abraham Joseph Ash (c. 1813–1888), American rabbi
• Aesha Ash (born 1977), American ballet dancer
• Bill Ash (1917–2014), Canadian-American fighter pilot
• Brandon Ash (born 1977), American racing driver
• Brian Ash (born 1974), American screenwriter
• Brian Ash (bibliographer) (1936–2010), bibliographer
• Daniel Ash (born 1957), British guitarist
• Ed Ash, American car engine constructor
• Eileen Ash (1911–2021), English cricketer
• Erica Ash (1977-2024), American actress
• Eric Ash (1928–2021), British electrical engineer and former Rector of Imperial College
• George Ash (1859–1897), a South Australian newspaper editor, lawyer, and parliamentarian
• Gerald Ash, electrical engineer
• Gord Ash (born 1951), Canadian baseball manager
• Haruhiko Ash, Japanese rock singer
• Isaac Colton Ash (1861–1933), American banker, real-estate dealer, and politician
• John Ash (disambiguation), several people
• Ken Ash (1901–1979) American baseball pitcher
• Kevin Ash (1959–2013), British motorcycle journalist and writer
• Lauren Ash (born 1983), Canadian actress and comedian
• Leslie Ash (born 1960), British actress
• Marvin Ash (1914–1974), pseudonym of the American jazz pianist Marvin Ashbaugh
• Mary Kay Ash (1918–2001), American businesswoman
• Meir Eisenstadt (1670–1744), rabbi and author also known as Meir Ash
• Meir Eisenstaedter (1780–1852), rabbi, Talmudist, and paytan (liturgic poet) also known as Meir Ash
• Mitchell Ash (born 1948), American historian, philosopher and psychologist
• Rob Ash (born 1951), American football coach
• Russell Ash (1946–2010), British writer
• Sam Ash, born Samuel Ashkynase (1897–1956), American businessman
• Sam Ash (actor) (1884–1951), American vaudeville singer and film actor
• Timothy Garton Ash (born 1955), British academic historian and writer
• Victor Ash (disambiguation), several people
• William H. Ash (1859–1908), African-American politician and former slave

• Ash, one of the main characters from the film Sing
• Captain Ash, a recurring character in the video game series TimeSplitters
• Nina Ash, a character in the TV series Angel
• Randolph Henry Ash, a Victorian poet in the novel Possession: A Romance by A. S. Byatt
• Ash, a virtuous chimpanzee and son of Rocket, on Dawn of the Planet of the Apes.

• Oisc of Kent (pronounced “Ash”) (died 512), semi-legendary king of Kent
• Asch (surname)
• Ash (disambiguation)
• Ashe (disambiguation)
• Ashe (name)