Ballyhoo is a dated slang term, commonly defined as "a noisy, attention-getting commotion lacking substance".
In biology, Ballyhoo is the name of a species of baitfish. The word may also refer to:
Music Ballyhoo (album), a 1997 album by Echo & the Bunnymen Ballyhoo (South African band) Ballyhoo!, an American reggae rock band Ballyhoo, a song from the Green Day album Saviors' deluxe edition
Magazine, games and mountain Ballyhoo (magazine), an American humor magazine published 1931–1954 Ballyhoo (video game), published 1985 Ballyhoo, a pinball game released in 1932 Mount Ballyhoo, a mountain in Alaska