Momir Rnić (Serbian Cyrillic: Момир Рнић; born 3 February 1955) is a Serbian handball coach and former player who competed for Yugoslavia in the 1980 Summer Olympics, in the 1984 Summer Olympics, and in the 1988 Summer Olympics.

After starting out at Hercegovina Sečanj, Rnić briefly played for Proleter Zrenjanin, before moving to Crvenka.

At international level, Rnić represented Yugoslavia and competed in three Olympic Games, winning the gold medal in 1984 and the bronze medal in 1988.

In 1990, Rnić became head coach of his former club Proleter Zrenjanin, taking them to the European Cup final in 1991 and winning the Yugoslav Championship in 1992.

Between 2001 and 2003, Rnić served as head coach of TVA Saarbrücken in the 2.