Family name Lacosse (Lacosse 
) , in the world, is a rare cognomen. The surname Lacosse is habitual in France, where it is a rare surname, Canada, and the United States. Much less frequently, Lacosse is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lacosse | Canada, France, Argentina, New Zealand, United States |
|
ken lacosse American musician, US (b. 1960) |
|
|
matt lacosse American football player (born 1992), US (b. 1992) |
|
| jennifer lacosse researcher (ORCID 0000-0003-3081-733X) |
|