Throughout the world, Merrigan (Merrigan 
) is an extremely rare feminine forename. Predominantly, Merrigan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Merrigan | United Kingdom, Australia, Ireland, United States, Canada |
Merrigàn, and เมอร์ริแกน
| harvey merrigan Australian rules footballer, AU (b. 1949) |
|