8 is a 2011 American play that portrays the closing arguments of Perry v. Schwarzenegger, a federal trial that led to the overturn of Proposition 8, an amendment banning same-sex marriages in California.

It was created by Dustin Lance Black in light of the court's denial of a motion to release a video recording of the trial and to give the public a true account of what transpired in the courtroom.

The play is written in the style of verbatim theatre reenactment, using transcripts from the trial, journalist records, and media interviews from the plaintiffs, defendants and proponents involved.

8 first premiered on September 19, 2011 at the Eugene O'Neill Theatre in New York City, and later broadcast worldwide from the Ebell of Los Angeles on March 3, 2012.

On October 22, 2012, another one-night-only reading was performed at the downtown Crest Theater in Sacramento, California, U.S.[4] The American Foundation for Equal Rights (AFER) and Broadway Impact, sponsors of the play, have licensed the play for readings nationwide on college campuses and in community theaters free of charge, as an educational tool.