Brett Ross Cantor (November 5, 1967 – July 30, 1993) was an American record label executive, concert promoter and nightclub owner.

Cantor left Chrysalis to work briefly as an agent and then a promoter, putting together some of the largest concert and dance events in the city at that time.

[2] He also entered the nightclub business, taking a 10 percent stake in Dragonfly, a club known at the time for its 1970s and hip hop theme nights.

His death was the subject of renewed interest a year later during preliminary motions in the trial of O. J. Simpson for the killings of his former wife, Nicole Brown Simpson, and Nicole's friend Ron Goldman, when Judge Lance Ito ruled that defense lawyers could have access to the investigatory file in the Cantor case.

[4] It has also been argued in books on the case that Cantor knew both Goldman and Nicole, and thus they may have been killed over mutual involvement in possibly illegal business activities.

Events Underground organized at nightclubs, like Petting Zoo, Sanitarium, After Hours and L.A. Palooza were among the largest concert/dance parties in Los Angeles during that time.

[2] When nightclub owner Steve Edelson converted one of his Frolic Rooms, on Santa Monica Boulevard in Hollywood, into a different club called Dragonfly, Cantor came in as his partner, holding a 10 percent share in the business.

They became romantically involved; in her 2018 autobiography Brave, McGowan credits him with helping her escape an abusive relationship that had led her to develop an eating disorder.

[8] The investigation was moved from the local precinct to the downtown headquarters of the Los Angeles Police Department (LAPD), where it continues.

[11] In September 1994, Simpson's lawyers moved to have Judge Lance Ito allow them to review the LAPD's file on the Cantor homicide.

[12] Goldman's throat, in particular, had been cut by someone reaching from behind him, starting on the left side and moving upward to the right across the neck, similar to the wound on Cantor.

[5] Ito granted the motion three weeks later,[4] ruling that the material was "discoverable under Brady",[6] referring to the 1963 U.S. Supreme Court decision that requires prosecutors to turn over any potentially exculpatory evidence their investigations uncover to the defense.