Borsoi is a surname of Italian origin. Notable people with the surname include:
- Gino Borsoi (born 1974), Italian former Grand Prix motorcycle road racer
- Romano Tozzi Borsoi (born 1979), Italian footballer
- Acácio Gil Borsoi (1924-2009), a Brazilian architect and professor
- Antonio Borsoi (1880-1953) a designer and master craftsman Brazilian.