"Please Don't Leave Me" is a song from American pop rock singer Pink and the third single taken from her fifth studio album Funhouse. It was released on January 31, 2009. The song received strong airplay in Australia and New Zealand, as well as being added to the BBC Radio 1 A-List playlist in the UK. The music video for "Please Don't Leave Me" was directed by Dave Meyers, and was leaked online, along with the single's cover art, before the song's official announcement as a single. In the United States, the song managed to reach the Top 20, peaking at 17. The song was featured in Suburgatory.

"Please Don't Leave Me" was co-written by Pink and Max Martin, who handled the production as well, for the track. It is one of four songs from the album produced by Max Martin, with the number one single "So What" being another of the four. The song is a mid-tempo track that details a love-hate relationship. Pink sings of someone having a bad effect on her, yet not being able to let go of the person. She insists during the chorus, "I always say how I don't need you, but it's always gonna come right back to this, please don't leave me." The song was one of the first three to be heard and performed from Funhouse, being performed along with "So What" and second single, "Sober", live on Much Music, prior to the album's release.

Digital Spy gave the song a positive review: "A really good video can make you realise a song's better than you originally thought - a case in point being the new Pink single. Within the context of her Funhouse album, 'Please Don't Leave Me' seemed like a quite good angsty break-up song - one of many quite good angsty break-up songs on there - but after watching the Misery-inspired promo it becomes something far more memorable. "I can be so mean when I wanna be, I am capable of really anything," sings Pink here, one of several lines that resonate harder once you've seen her brandishing a golf club, chucking her invalid boyfriend out of his wheelchair and chasing him round the house with an axe. Still, entertaining as the video is, it's Pink's bruised vocals - which convey the combination of bitterness and regret in her lyrics perfectly - that leave the biggest impression".

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