Ernst Aigner (born 31 October 1966 in Mödling) is a retired Austrian footballer.

A tall central defender, Aigner made his debut in the Austrian Bundesliga for Admira/Wacker in 1986 and finished runner-up to Swarovski Tirol with Admira in the 1988–89 season.

His best season with Admira earned him a move to Austrian giants Austria Wien with whom he won 3 championships and 3 cups.

He played for the Austria national football team, making his debut in a victorious international friendly against Norway on 31 May 1989, 4-1.

This biographical article related to association football in Austria, about a defender, is a stub.