NCAA Season 67 basketball tournaments

1991 NCAA season
Host schoolSan Beda College
Men's Finals G1 G2G3Wins
 Mapúa Cardinals 103 94912
 San Beda Red Lions 94 100901
DurationOctober 9–16, 1991
Arena(s)ULTRA
Finals MVPBenny Cheng
Winning coachJoel Banal
TV network(s)Islands TV 13
Juniors' Finals G1 G2G3Wins
 Mapúa Red Robins 75 89601
 San Beda Red Cubs 93 80792
DurationOctober 9–16, 1991
Arena(s)ULTRA
Finals MVPTyrone Bautista
Winning coachAto Badolato

The 1991 NCAA basketball tournament was the 67th season in the Philippine National Collegiate Athletic Association (NCAA). The season opens on August 3 at the Araneta Coliseum and ended on October 16 with the Mapua Cardinals winning back-to-back championships in the Seniors division and won their 5th NCAA crown.