Surname Плесси (Plessis 
, Plessy 
, Plessix 
) , across the world, is a common cognomen. The family name Плесси is characteristic of Namibia, where it is a common surname, Eswatini, where it is quite a common surname, and British Virgin Islands (explore the name in all countries). In absolute terms, this name is the most popular in South Africa, France, and Namibia. Much less frequently, Плесси is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Plessis | Zimbabwe, Democratic Republic of the Congo, Namibia, South Africa, France |
| Plessy | Democratic Republic of the Congo, United Kingdom, South Africa, France, United States |
| Plessix | Canada, France, New Zealand, Germany, United States |
| Плесси | Russia |