Surname Mightly (Mightly 
) , all over the world, is a very rare last name. The cognomen Mightly is characteristic of the United Kingdom, where it is a very rare surname, the United States, where it is an extremely rare surname, and Canada. Much less frequently, Mightly is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mightly | India, United States, Canada, United Kingdom |