Globally, Hanrahan-Tan (Hanrahan-Tan 
) is an extremely rare unknown gender first name. Much more frequently, Hanrahan-Tan is the last name as well as the forename. Parts of the name also exists independently as a last name Hanrahan, and a last name Tan.
| VARIANT | COUNTRY |
|---|---|
| Hanrahan-Tan | Australia |