"Bulletproof" is a song by English synthpop duo La Roux from their eponymous debut album, La Roux (2009). Written and produced by members Elly Jackson and Ben Langmaid, the song was released digitally in the United Kingdom on 21 June 2009 and physically the following day as the album's third single.

"Bulletproof" was met with both critical and commercial success, debuting at number one on the UK Singles Chart. It was a sleeper hit in the United States, where it peaked at number eight on the Billboard Hot 100 in June 2010, following televised performances of the song on The Ellen DeGeneres Show and Last Call with Carson Daly. It has been downloaded 2,324,000 times in the US as of September 2012. It also reached within the top ten of Australia, Austria, the Belgian territory of Flanders, Ireland, New Zealand and Ukraine.

Jackson discussed writing "Bulletproof":

"We started it, and it felt really good. We had a great verse, and then we did about five choruses. The lyric went "This time I'll be... " and there was too much of a gap. We'd both been sitting there in silence for ages trying to work it out. Suddenly, we both looked up and went "This time, baby" and thought, "Yes, let's get it down." I do remember that when we wrote that, we thought "Call the manager, we've got the one"."

"Bulletproof" received acclaim from music critics. One author of Pitchfork Media called it "a catchy-as-hell electro-pop smash", and another, Joshua Love, called it the best song on La Roux.Digital Spy music editor Nick Levine gave the song five stars and described it as "a bright, bouncy slice of Yazoo-ish electropop with a chorus every bit as immediate as 'In For The Kill'", adding that "Jackson's vocals are less shrill this time around, but she comes off just as formidable, informing a useless sod who's messed her about that she won't be letting him do it again." Fraser McAlpine of the BBC Chart Blog, who also awarded the song five stars, stated that "the one sentence that crops up most often goes something like this: "...yes, 'Bulletproof' is brilliant, but...", hinting that this might be a song which possesses magical powers of persuasion." He went on to give five points on why the song is good: marvellous verses, marvellous chorus, the music serves the song brilliantly, less shrill to the singing, and the vocoder breakdown. Adam R. Holz of Plugged In opined "Homage isn't a strong enough word to capture just how uncannily La Roux has repackaged the that vibe of yore popularized by the likes of Erasure, The Human League, Depeche Mode and Eurythmics."

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