| Country: | Yugoslavia → Serbia and Montenegro → Serbia |
| Birth Place: | Bačka Topola, Yugoslavia |
| Grandmaster (2004) | |
| Peakrating: | 2673 (May 2017) |
| Peakranking: | No. 73 (April 2017) |
| Fideid: | 921637 |
Robert Markuš (Serbian Cyrillic: Роберт Маркуш, Hungarian: Róbert Márkus; born October 7, 1983) is a Serbian chess Grandmaster.
He is a member of Novi Sad Chess Club.Markuš played for the Serbian Olympic team in 37th Chess Olympiad.