| Relja Dulić Fišer | |
| Birth Date: | 31 December 1975 |
| Plays: | Left-handed |
| Careerprizemoney: | $12,742 |
| Singlesrecord: | 1–1 (Davis Cup) |
| Highestsinglesranking: | No. 330 (18 June 2001) |
| Doublesrecord: | 4–0 (Davis Cup) |
| Highestdoublesranking: | No. 383 (16 April 2001) |
Relja Dulić Fišer (born 31 December 1975) is a Serbian former professional tennis player.
A left-handed player from Subotica, Dulić Fišer attained a career high singles ranking of 330, competing mostly in ITF Futures/satellite tournaments.[1] He had a poor record in ITF finals, losing 12 in a row at one point during his career.[2] His best performance on the ATP Challenger Tour was a quarter-final appearance at the Brașov Challenger in 2001.
Dulić Fišer was a member of the Yugoslavia Davis Cup team in 2000 and 2001. Appearing in a total of five ties, he won one of his two singles rubbers and was unbeaten in four doubles rubbers, all partnering Janko Tipsarević.