Last name St Denis (St Denis 
) , throughout the world, is quite a rare family name. The family name St Denis is characteristic of Canada, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United States. In absolute terms, it most frequently occurs in Canada, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| St Denis | Canada, United Kingdom, United States, New Zealand, France |