Trijn is a Dutch female given name, related to the French name Catherine. The diminutive is Trijntje. Notable people with the Dutch name include:
People Trijn Jans, also known as (1607-1685), Dutch Mennonite Trijn Janssens, real name of (born 1972), Dutch musician Trijntje Keever (1616-1633), tallest female person Trijn van Leemput (1530–1607), Dutch heroine Trijntje Oosterhuis (1973), Dutch singer Trijn Rembrands (1557–1638), Dutch heroine Trijnie Rep (1950) Dutch speed-skater
Fictional characters
Trijn de Begijn, title character in the homonymous opera by Alphonse Olterdissen