"4 AM" is a song by American rapper 2 Chainz featuring fellow American rapper Travis Scott. It was released on September 19, 2017, as the third single from the former's fourth studio album, Pretty Girls Like Trap Music (2017). It was sent to urban contemporary radio as a single on September 19, 2017, but originally was released on May 30, as a promotional single. The song was written alongside producers Murda Beatz and Cubeatz.

Max Weinstein of XXL wrote that the song had a "mellow vibe" to it, while Winston Cook-Wilson of Spin called it a "detuned, mid-tempo jam." 2 Chainz reminisces throwing himself a surprise birthday party and listening to Lil Wayne's album Tha Carter.

The music video was released on November 17, 2017. In it, 2 Chainz and Travis Scott throw a wild party with women, a couple of them topless, around them, with drinking and smoking marijuana involved.

Credits adapted from 2 Chainz's official website.