| Róbert Machán | |
| Birth Date: | 18 October 1948 |
| Birth Place: | Budapest, Hungary |
| Singlesrecord: | 15–32 |
| Singlestitles: | 0 |
| Highestsinglesranking: | No. 102 (23 August 1973) |
| Australianopenresult: | 1R (1973) |
| Frenchopenresult: | 2R (1973) |
| Wimbledonresult: | 1R (1973) |
| Doublesrecord: | 20–29 |
| Doublestitles: | 0 |
| Highestdoublesranking: | No. 175 (1 March 1976) |
| Australianopendoublesresult: | 1R (1973) |
| Frenchopendoublesresult: | 3R (1971) |
| Wimbledondoublesresult: | 1R (1973) |
Robert Machan (born 18 October 1948) is a former professional tennis player from Hungary. He enjoyed most of his tennis success while playing doubles. During his career, he finished runner-up in three doubles events.
Machan participated in 21 Davis Cup ties for Hungary from 1969 to 1985, posting a 9–6 record in doubles and a 5–10 record in singles.
| Result | W-L | Date | Tournament | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | 1973 | Prague, Czechoslovakia | Clay |  Balázs Taróczy | Jan Kodeš Vladimír Zedník | 3–6, 6–7 | |
| Loss | 0–2 | 1974 | Florence, Italy | Clay | Balázs Taróczy |  Paolo Bertolucci Adriano Panatta | 3–6, 6–3, 4–6 | |
| Loss | 0–3 | 1975 | Shreveport, United States | Carpet | János Benyik |  William Brown  Juan Gisbert Sr. | 4–6, 4–6 |