The Whos of Whoville, a minuscule creature featured in several Dr. Seuss books.

One of the Five Ws

Doctor Who, a British science fiction television series.

The Who, a British rock band

W.H.O., a fictional computer in the Marvel comics universe.

World Health Organization

Warhammer Online, an upcoming massively multiplayer roleplaying game.

The Guess Who, a Canadian rock band

WHO-TV, television station in Des Moines owned by Local TV LLC

WHO (AM), a radio station in Des Moines, Iowa, United States

Who (pronoun), an English language interrogative pronoun.

Who? (album), the debut album of Tony! Toni! Toné!

who (Unix), a Unix command that shows IDs of the users logged-into a network

Who? (novel), a 1958 novel by science fiction author Algis Budrys, turned into a film with the same title in 1973

Who (magazine), an Australian magazine

World Humor Organization, a Denver-based improvisational comedy company

"Who", a song by Diana Ross from her 1982 album Silk Electric

Washington Homeschool Organization, a homeschool group in the US state of Washington

"Who...", a song by Japanese singer Ayumi Hamasaki from her album LOVEppears

Who, a masked wrestler in the World Wrestling Federation played by Jim "The Anvil" Neidhart

The person on first base in the Abbott and Costello routine, "Who's on First?"

"Who", a song by Kyle Ward that plays during the credits screen for In The Groove 2.

Hu or HU, disambiguation