The 1983–84 season was FC Dinamo București's 35th season in Divizia A. In this season, Dinamo made their best ever performance at the European level, reaching the semi-finals of the European Cup. Dinamo's opponents in the first round were Finnish champions Kuusysi. Dinamo Bucharest won the first leg 1–0 away and the second leg 3–0 at home, thus winning the round 4–0 on aggregate.The Romanians' opponents in the second round were reigning European champions Hamburg. The first leg, which was played in Bucharest, was won by Dinamo 3–0. The second leg was played at Hamburg's home ground Volksparkstadion; Hamburg won the match 3–2, ("Dinamo ruined their [Hamburg's] evening with two goals in the last five minutes to send the holders crashing out at the first hurdle") which meant that Dinamo took