"Sick Boy" is a song by American electronic music duo the Chainsmokers. It was written by the Chainsmokers, Tony Ann and Emily Warren, with production handled by the Chainsmokers and Shaun Frank. The song was released by Disruptor Records and Columbia Records on January 17, 2018, as the lead single from the duo's second studio album of the same name.

The Chainsmokers are an American electronic DJ and production duo consisting of Alexander "Alex" Pall and Andrew "Drew" Taggart. They started out by releasing remixes of songs by indie artists. The EDM-pop duo achieved a breakthrough with their 2014 song "#Selfie", which became a top-twenty single in several countries. They have won a Grammy award, two American Music Awards, seven Billboard Music Awards and nine iHeartRadio Music Awards. According to Forbes 2019 list of highest-paid celebrities, the Chainsmokers were the highest-paid DJs, dethroning Calvin Harris after six years.