1990 UCLA Bruins softball team

The 1990 UCLA Bruins softball team represented the University of California, Los Angeles in the 1990 NCAA Division I softball season. The Bruins were coached by Sharron Backus, who led her sixteenth season and Sue Enquist, in her second season, in an uncommonly used co-head coach system. The Bruins played their home games at Sunset Field and finished with a record of 62–7. They competed in the Pacific-10 Conference, where they finished first with a 16–2 record.

The Bruins were invited to the 1990 NCAA Division I softball tournament, where they swept the West Regional and then completed a run through the Women's College World Series to claim their fifth NCAA Women's College World Series Championship. The Bruins had earlier claimed an AIAW title in 1978 and NCAA titles in 1982, 1984, 1988, and 1989.