"What a Night" is a song by American singer Kat DeLuna featuring Jeremih. It was released on February 26, 2016, and appeared on DeLuna's compilation album Loading (2016). The song was written by Jeremih, George M. Ladkani, Samuel Jean, Tyrone Edmond, and the duo Da Beat Freakz. A remix featuring English rapper Stefflon Don was released on August 26, 2016.
The song contains a sample of "December, 1963 (Oh, What a Night)" by American pop rock band The Four Seasons.
The music video for "What a Night" premiered on March 1, 2016, on DeLuna's Vevo channel. It was directed by Haitian-born model Tyrone Edmond.