"Mony Mony" was a 1968 single by the American rock band Tommy James & The Shondells from their 1968 album of the same name. The song became a hit for Billy Idol in 1987.

"Mony Mony" was credited to Tommy James, Bo Gentry, Richie Cordell, and Bobby Bloom. The hook in the song is said to have been inspired by James' view of a MONY sign atop the Mutual of New York Building in the New York City skyline from his Manhattan apartment. As Tommy James says in a 1995 interview in Hitchmagazine:

{}quote|True story: I had the track done before I had a title. I wanted something catchy like "Sloopy" or "Bony Maroney," but everything sounded so stupid. So Ritchie Cordell and I were writing it in New York City, and we were about to throw in the towel when I went out onto the terrace, looked up and saw the Mutual of New York building (which has its initials illuminated in red at its top). I said, "That's gotta be it! Ritchie, come here, you've gotta see this!" It's almost as if God Himself had said, "Here's the title." I've always thought that if I had looked the other way, it might have been called "Hotel Taft."|}}

"Mony Mony" was the only song by the group to reach the top twenty in the United Kingdom; it reached #1 in the UK, and #3 in the USA music video of it was made at the time, dated in showing love beads, but a decade and half later would receive some play on MTV.

The song "Mony Mony" has been covered by many artists, including Billy Idol, Amazulu, Status Quo and The Beach Boys. Notably, Billy Idol's version replaced another Tommy James hit as the #1 BillboardHot 100 single, "I Think We're Alone Now", covered by Tiffany.

"Weird Al" Yankovic wrote a parody of this song from his album, Even Worse, entitled "Alimony" (based on the Billy Idol version). It was about a recently divorced man complaining about his ex-wife taking everything he owns away from him in alimony payments.

Billy Idol's version was recorded on two separate occasions. The original 1981 studio recording is the most common version heard on rock radio stations across the globe. However, Idol released a live version as a single in 1987, while promoting his forthcoming compilation Vital Idol. It was the live version that shot straight to #1, beating out Tiffany's cover of Tommy James I Think We're Alone Now.

The live single version can be found on Idol's Greatest Hitscompilation.