A free radical is an atomic or molecular species with unpaired electrons on an otherwise open shell configuration.
Free Radical may also refer to:
Chemistry Free Radical Centre, a research center located in Australia that works in all areas of free radical chemistry Free-radical theory of aging
Arts and entertainment Film Free Radicals (1979 film), an American animated short by Len Lye Free Radicals (2003 film) (German: ), an Austrian film by Barbara Albert
Literature and publications Free Radical (magazine), a New Zealand-based magazine "Free Radicals" (short story), by Alice Munro Free Radicals: The Secret Anarchy of Science, a book by Michael Brooks
Music Free Radicals (band), an American band "Free Radicals", a song by American rock band The Flaming Lips on the album At War with the Mystics
Video games Free Radical Design, a British video game developer