Pärn is a common surname in Estonia (meaning linden), and may refer to:

• Andre Pärn (born 1977), basketball player
• Endel Pärn (1914–1990), actor
• Harald Pärn (1912–1943), boxer (:et)
• Henn Pärn (born 1941), politician
• Illimar Pärn (born 1988), ski jumper
• Jakob Pärn [et] (1843–1916), writer and pedagogue
• Katrin Pärn (born 1977), actress
• Lembit Pärn [et] (1903–1974), Soviet military commander
• Malle Pärn [et] (born 1945), actress
• Olga Pärn (born 1976), animator, film director and illustrator
• Priit Pärn (born 1946), cartoonist and animation director
• Sander Pärn (born 1992), rally driver
• Rasmus Pärn (born 2009), Viljandi Tulevik U-19 Captain

• Lõhmus, another Estonian surname meaning Linden