Mighty Atom may refer to:
People Sports Jimmy Wilde (1892–1969), Welsh boxer Sydney Wooderson (1914–2006), English athlete Joe Greenstein (1893–1977), Polish-American strongman Barbara Buttrick (born 1929), English female boxer Eileen Sheridan (1923–2023), English cyclist
Other fields Mildred Albert (1905–1991), American fashion show producer and fashion personality Bruce Forsyth (1928–2017), British entertainer, known in his early career as Boy Bruce, the Mighty Atom Albert Power (1870–1948), Irish priest, academic and author
Film and television "The Mighty Atom" (Thunderbirds), the 14th episode of the first season of the Supermarionation television series Thunderbirds Mighty Atom (TV series), a 1959 Japanese Tokusatsu live action TV show The Mighty Atom, a 1958 animated short film featuring Reddy Kilowatt
Other uses Mighty Atom (1988 video game), published by Konami Mighty Atom (1994 video game), published by Banpresto Mighty Atom, the original Japanese name for the manga comic series Astro Boy created by Osamu Tezuka Mighty Atom Records, a Welsh-based record label The Mighty Atom, a novel by Marie Corelli