Last name Monohan (Monohan 
) , in the world, is a rare family name. The family name Monohan is habitual in Australia, where it is a rare surname, the United States, where it is a very rare surname, and Canada. Much less frequently, Monohan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Monohan | Australia, Canada, United Kingdom, United States, India |
|
jack monohan, sr. Australian rules footballer and umpire, AU (b. 1873) |
|
|
jack monohan, jr. Australian rules footballer, AU (b. 1902) |
|
| clifford monohan cricketer (1896-1974), AU (b. 1896) |
|