Slim may mean to:
Field Marshal William Slim, 1st Viscount Slim (1891 – 1970), a British military commander and 13th Governor-General of Australia Slim (movie), a 1937 film of the William Wister Haines novel starring Henry Fonda Slim (band), a musical group from Oakland, California Carlos Slim Helú, Mexican billionaire Slim Gaillard, half of the "Slim & Slam" partnership Guitar Slim, a famous musician Slim Shady, rapper also known as Eminem Slim, a 1934 novel by William Wister Haines Slim Pickens (1919-1983), American actor and cowboy Slim Whitman, a country musician Slim Moon, record maker and musician SLiM, a desktop-independent graphical login manager slim, short linear motif SLIM is a slitless spectroscopy simulator programme Slim, Toronto radio personality
Slim may also mean: AIDS, often called "slim", especially in Africa, because of the wasting it produces in untreated victims.
SLIM may mean: SLIM theory of language