The 1980–81 season was the 35th season in Rijeka’s history and their 19th season in the Yugoslav First League. Their 10th place finish in the 1979–80 season meant it was their seventh successive season playing in the Yugoslav First League.

Source: rsssf.com
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored
(C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished:
(Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.

Last updated: 2 February 2014.
Source: Competitive matches
Ground: A = Away; H = Home. Result: D = Draw; L = Loss; W = Win; P = Postponed.

Source: rsssf.com

Competitive matches only.

1. Rijeka’s Milan Ružić was sent off when the result was 1–1. The referee abandoned the match following the scuffle that ensued. The match was voided and awarded 3–0 to Vardar. Ružić was suspended for six months.

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