The eighteenth season of Saturday Night Live, an American sketch comedy series, originally aired in the United States on NBC between September 26, 1992, and May 15, 1993.

Many changes happened before the start of the season. Long-term cast member Victoria Jackson left the show after six seasons.^[1] Newer cast members Beth Cahill and Siobhan Fallon were both fired.^[1] Lorne Michaels did not hire any new cast members. Rob Schneider was upgraded to repertory status.^[1] Ellen Cleghorne, Tim Meadows, Adam Sandler and David Spade remained in the middle category. Melanie Hutsell was promoted to the middle category and Robert Smigel stayed a featured player.

Long-term cast member Dana Carvey would leave mid-season; he originally planned to leave in the fall of 1992, but he ended up staying until the February 6, 1993 episode.^[1][2] This would also be the final season for cast members Chris Rock and Robert Smigel.

After three years with the show, Rock quit at the end of the season.^[3][4] Writer and featured player Smigel left to become the head writer for Late Night with Conan O'Brien.

This season was also home to one of SNL's most infamous moments: Sinéad O'Connor tore a photograph of Pope John Paul II at the end of her second singing performance.^[5][6]

Coneheads, a film based on the popular Coneheads sketches that appeared on the show in the 1970s, was released on July 23, 1993. Cast members Dan Aykroyd, Peter Aykroyd, Jane Curtin, Chris Farley, Phil Hartman, Jan Hooks, Jon Lovitz, Michael McKean, Tim Meadows, Garret Morris, Kevin Nealon, Laraine Newman, Adam Sandler, David Spade, and Julia Sweeney all appear in the film. The film did not do well at the box office and was largely panned by critics.^[17]