"Bang Bang (My Baby Shot Me Down)" is the second single by American singer-actress Cher from her second album, The Sonny Side of Chér. Written by her then-husband Sonny Bono and released in 1966, the song reached No. 3 in the UK Singles Chart and No. 2 on the Billboard Hot 100 for a single week (behind "(You're My) Soul and Inspiration" by The Righteous Brothers), eventually becoming one of Cher's biggest-selling singles of the 1960s.

The single proved successful, charting high in several countries worldwide. It became Cher's first million-selling single and her first top 3 hit in the UK (and her last until "The Shoop-Shoop Song" reached No. 1 in 1991). Critic Tim Sendra, in his album review of The Sonny Side of Cher, gave the song a mixed review: "The only track that has any real zest is the Bono-written novelty "Bang Bang (My Baby Shot Me Down)", the kind of dramatic song Cher could knock out in her sleep but also a song with no real heart."

In 1987, Cher recorded a rock version of the song for her 1987 Platinum-certified comeback album Cher. Produced by Jon Bon Jovi, Richie Sambora, and Desmond Child, the song featured backing vocals by Jon Bon Jovi and Michael Bolton, among others, and was released as a promotional single in 1988. Cher performed this version on her Heart of Stone Tour and on Living Proof: The Farewell Tour, and it was played instrumentally on the Dressed to Kill Tour in 2014.

Nancy Sinatra recorded one of the best-known covers of the song, for her 1966 album How Does That Grab You? Her version features tremolo guitar, played by her arranger, Billy Strange; and had a resurgence in popularity when it was used in the opening credits of the 2003 Quentin Tarantino film Kill Bill Volume 1. In the sequence preceding the credits, Tarantino creates a literal, bloody interpretation of the song's chorus and the third verse, about a wedding day. Her version also was the theme for BBC coverage of the 2005 Wimbledon tennis championships, and has been sampled on several hip-hop recordings, including the Audio Bullys (featuring Nancy Sinatra) top 3 UK hit "Shot You Down" in 2005.

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