Bruinsma is a surname of West Frisian origin. It originated as a patronymic surname, "son of Bruin" (Bruno).^[1] Notable people with this surname include:

• Evan Bruinsma (born 1992), American basketball player
• Klaas Bruinsma (drug lord) (1953–1991), Dutch drug dealer
• Klaas Bruinsma (translator) (born 1931), West Frisian translator
• Liesette Bruinsma (born 2000), Dutch Paralympic swimmer
• Robijn Bruinsma (born 1953), Dutch theoretical physicist
• Sikke Bruinsma (1889–1963), Dutch sports shooter