Cognomen Trishan (Trishan 
) , globally, is a rare surname. The last name Trishan is characteristic of Sri Lanka, where it is a rare surname, Bangladesh, and Israel, where it is a very rare surname. More frequently, Trishan is the forename as well as the last name.
Pal, Little, Naidoo, Maharaj, Moodley, Charles, Burland, Debnath, Johnson, Jhummat, Naicker, Harilal, Barfield, Dasgupta, Govender, Talukdar, Fernando, Williams, Marimuthu, Ramrutton, Viduranga, Rajapaksha, Pillay, Peiris, Perera, Baduge, Rai, Rao, Roy, Dey, Das, Arul, Khan, Deva, Nair, Malhi, Ponnamperuma, Singh, Kumar, Patel, Panch, Ghosh, Esram, Hazra, Umraw, Mondal, Morhan, Chetty, Brown, and Wickramasinghe