"Out Last Night" is a song co-written and recorded by American country music singer Kenny Chesney. It was released on April 6, 2009 as the only new track on his album Greatest Hits II. The song is Chesney's forty-second single release, and his thirty-eighth top 40 hit on the Billboard Hot Country Songs. Chesney wrote the song with Brett James.

"Out Last Night" is an up-tempo song in which the male narrator recalls a party that he attended the night before. He recalls the people that he met there (including "girls from Argentina and Arkansas / Maine, Alabama, and Panama"), as well as his actions (such as lying to others after a few drinks, and telling them that he is "a doctor, a lawyer, a senator's son, / Brad Pitt's brother, and a man on the run"). In the chorus, he says that "Everybody was some kind of star / When [they] went out last night." Co-written by Brett James and Chesney, it is one of three new tracks on his second greatest hits album Greatest Hits II.

Matt Bjorke of Roughstock gave the song a favorable review. He said that the song had a more traditionally country sound, as it did not include the "amped up guitars" that Chesney's previous summer-themed songs had. Kevin J. Coyne of Country Universe gave the song a B rating, also saying that it had a more traditional production.

Karlie Justus of Engine 145 gave it a thumbs-down rating, saying that Chesney's vocal interpretation was "bland" and that the lyrics lacked the humor necessary to make the song work.

The music video was directed by Shaun Silva, and it premiered on May 1, 2009. The video was filmed at the Raleigh Hotel on South Beach at 1775 Collins Avenue and mainly consists of Chesney and many other people at an island-themed party at night, with people mingling, drinking, hanging out around a campfire and swimming in a large pool. Kenny is shown singing at the campfire with his guitar, wearing his signature cowboy hat, a sleeveless shirt and jeans and is barefoot, and he is also shown singing with his guitar on a diving board, wearing a sleeveless shirt and shorts and is barefoot.

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