Surname Richardsonn (Richardsonn 
) , around the globe, is a very rare cognomen. The family name Richardsonn is characteristic of Malaysia, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. Much less frequently, Richardsonn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Richardsonn | Brazil, United States, United Kingdom, Malaysia |