"1-800-273-8255" is a song by American rapper Logic featuring Canadian singer-songwriter Alessia Cara and American singer-songwriter Khalid. It was released on April 27, 2017, through Visionary Music Group and Def Jam Recordings, as the third single from Logic's third studio album, Everybody. The song's title is the previous phone number for the American National Suicide Prevention Lifeline (NSPL), now known as the 988 Suicide & Crisis Lifeline. Although the lifeline later changed its phone number to the simpler "988" in July 2022, the original number remains active. It was written by its three performers alongside Dylan Wiggins, Drew Taggart of The Chainsmokers, and 6ix, the latter of whom produced the track with Logic. "1-800-273-8255" eventually peaked at number 3 on the US Billboard Hot 100 and received nominations for Song of the Year and Best Music Video at the 60th Annual Grammy Awards.

Sir Robert Bryson Hall II, known professionally as Logic, is an American rapper, singer, songwriter, and record producer from Gaithersburg, Maryland. He released his debut mixtape, Psychological: The Mixtape in December 2009 under the name Psychological, thereafter shortening his name to Logic. He gained popularity following his Young Sinatra (2011) mixtape series; its third installment, Young Sinatra: Welcome to Forever (2013) received critical acclaim and led him to secure a recording contract with Def Jam Recordings. Logic's first two studio albums—Under Pressure (2014) and The Incredible True Story (2015)—both peaked within the top five of the U.S. Billboard 200, while the former received platinum certification by the Recording Industry Association of America (RIAA).