Trela is a surname of Polish origin which derives from trel – an area in the forest where felled timber is located or trill. Notable people with the name include:
- Dariusz Trela, Polish soccer player
- Elżbieta Trela-Mazur, Polish historian
- Jerzy Trela (1942–2022), Polish actor
- Stanisław Trela (1892–1950), Polish architect
