"Rat Trap" was a single by The Boomtown Rats, which reached No. 1 in the UK Singles Chart for two weeks in November 1978, the first single by a punk or new wave act to do so. It was written by Bob Geldof, and produced by Robert John "Mutt" Lange. It replaced "Summer Nights", a hit single for John Travolta and Olivia Newton-John from the soundtrack of Grease, at number one in the UK chart after "Summer Nights" seven week reign at the top.

A rat trap is a trap designed to catch rats.

Rat trap may refer to:

• Rat trap or (rattrap), a trap designed primarily to catch rats
• Rattrap (Transformers), a fictional character from the Transformers toyline
• The Rat Trap, a 1918 English drama
• Rat Trap, a single by The Boomtown Rats which reached #1 in the UK singles chart in 1978
• Rat Trap (film), a 1963 French film
• Elippathayam (The Rat Trap), a 1981 Indian film
• The original name for the video game Krusty's Fun House
• Rat trap pedals, a style of metal bicycle pedal.