The Castaways are an American frat/garage rock band from the Twin Cities in Minnesota.

Their first and only hit single was "Liar, Liar". Written by band leader James Donna and Denny Craswell, produced by Timothy D. Kehr and released by Soma Records, it reached number 12 on the Billboard Hot 100 chart in 1965. "Liar, Liar" is featured in the films Good Morning, Vietnam and Lock, Stock and Two Smoking Barrels. The Castaways performed "Liar, Liar" in the 1967 beach movie It's a Bikini World. Their followup, "Goodbye Babe," was another local hit, but did not break nationally.