| Birth Date: | 28 August 1923 |
| Birth Place: | Motherwell, Scotland |
| Death Place: | Chester, England |
Robert Forbes Gentleman (28 August 1923 – 21 October 2005) was a British water polo player who competed in the 1948 Summer Olympics. He was part of the British team which was eliminated in the first round of the 1948 tournament. He played both matches.