Surname Larossa (Larossa 
) , in the world, is a rare family name. The cognomen Larossa is characteristic of Italy, where it is a rare surname, Austria, and Algeria. Not in comparison with a country's population, it is the most numerous in Italy, the United States, and Indonesia. Very seldom, Larossa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Larossa | Italy, Indonesia, United States, Argentina, Algeria |
| donato larossa American surgeon, US (b. 1941) |
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| dick larossa American politician, US (b. 1946) |
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