Ioan Igna (born 4 June 1940) is a Romanian former football referee and player.

Igna played football at UTA Arad between 1957 and 1960 and 1964–1967 and at Știința Timișoara between 1961 and 1964, he became a referee in 1972.

In the second period of extra time, he did not penalise a foul by the Brazil goalkeeper Carlos on France attacker Bruno Bellone.

[4][5] BBC commentator Jimmy Hill described Igna's decision to ignore the foul by Carlos as "an extreme mistake".

[4] The laws of the game were subsequently amended to specifically address the situation that occurred in the penalty shootout.