Irmgard Trojer (born 16 March 1964) is an Italian former 400 metres hurdler.

She won a bronze medal in the 400m hurdles at the 1989 Universiade and competed at the Olympic Games in 1988 and 1992.

Born in Innichen, Italy, Trojer won three Individual medals at International athletics competitions.

She also reached the semifinals at the IAAF World Championships in Athletics in 1987 and 1991.

Trojer is a nine-time Italian champion.