Udayani Nirosha Thalagana (born 20 June) () popularly known as Nirosha Thalagala, is a Sri Lankan actress, model and dancer. She is a popular dancer on the stage. She got famous after performing in Sinhala film Suseema which was released in 2011. After that she performed in Aloko Udapadi (2017), Nidahase Piya D S (2018), Nim Him (2020)
Nirosha was born in Malabe, Sri Lanka. She went to the Rahula Balika, Malabe and graduated from the University of Kelaniya in 2008. After that, she started her career as a dancer and gradually became an actress and model. In 2009 she married Asela Priyadarshana.