Tharshan Thiyagarajah (born 17 September 1990) is a Sri Lankan actor and model who works prominently in Tamil film industry.
Tharshan is from Jaffna, Sri Lanka and worked as an engineer in an IT company. He started his career in 2014 as a model and won the Mister Sri Lanka International competition title. After some problems with his modeling sponsor, he decided to leave to India. He appeared in minor roles in a few Indian Tamil films. In 2019, he made his debut into Indian television by participating as a contestant in the reality show Bigg Boss Tamil 3. After his participation in the show he also appeared in the television show The Wall with Mugen Rao. Following Bigg Boss, Tharshan was offered to star in Koogle Kuttappa (2022) co-starring K. S. Ravikumar and fellow Sri Lankan actress Losliya Mariyanesan. The film was a remake of the Malayalam film Android Kunjappan Version 5.25. His next film was the village drama Naadu (2023) directed by M. Saravanan, which he shot for at Kolli Hills. To prepare for his role in the 2025 crime drama, Surrender, he trained with a police officer for two weeks.