Troelstra is a surname of Frisian origin. Notable people with the surname include:
- Pieter Jelles Troelstra (1860–1930), Dutch socialist politician
- Anne Sjerp Troelstra (1939–2019), Dutch mathematician
- Jelle Troelstra (1891–1979), Dutch painter
Troelstra is a surname of Frisian origin. Notable people with the surname include: