The 1989–90 season was the 44th season in Rijeka's history and their 28th season in the Yugoslav First League.

Their 10th place finish in the 1988–89 season meant it was their 16th successive season playing in the Yugoslav First League.

Source: rsssf.com Source: rsssf.com Competitive matches only.

Appearances in brackets indicate numbers of times the player came on as a substitute.

Data for league attendance in most cases reflects the number of sold tickets and may not be indicative of the actual attendance.