Ad lib (disambiguation)

Ad libitum, often shortened to "ad lib", denotes improvisation in various performing arts.

Ad Lib may also refer to:
 * Ad Lib (album), a 1959 album by Jimmy Giuffre
 * Ad Lib, Inc., a sound card manufacturer
 * Ad Lib (typeface), a typeface by Freeman Craw
 * The Ad Libs, an American band
 * Ad Lib (TV series), American music television series
 * Ad Lib (comedy show), a British comedy show