| Robert McClenahan | |
| Full Name: | Robert Orr McClenahan |
| Birth Date: | 10 May 1902 |
| Birth Place: | Belfast, Ireland |
| Death Place: | Belfast, Northern Ireland |
| Position: | Wing |
| Repyears1: | 1923 |
| Repcaps1: | 3 |
| Reppoints1: | 0 |
Robert Orr McClenahan (10 May 1902 — 10 October 1957) was an Irish international rugby union player.
McClenahan was a wing three-quarter from Belfast, capped three times for Ireland in the 1923 Five Nations. He captained Instonians to their first ever Bateman Cup title in 1926–27.[1]
An accountant, McClenahan was a governor of the Royal Belfast Academical Institution and remained involved in rugby as an administrator, serving on the senior committee of the Ulster branch of the IRFU.[2]