Dr. Nawariyan (Dr. නවරියන්) is a 2017 Sri Lankan Sinhala action, comedy film directed by Ranjan Ramanayake and produced by Ranjan himself with Flash Entertainment. It stars Ranjan Ramanayake and Ruwangi Rathnayake in lead roles along with Rex Kodippili, Sriyani Amarasena and Sarath Chandrasiri. The film has influenced by 2003 Bollywood film Munna Bhai M.B.B.S.

A police officer, constable Punyasoma hunts an underworld gangster who is involved in a kidnapping of a rich woman.

Ranja along with Vihangi and her mother come to the Colombo city to meet the minister, they've elected to the parliament, to hand over a petition about a factory in their village which poisons village river. All three of them stay at Ranja's childhood friend Jonny's house at Colombo. Meanwhile, a local goon named Swarna and her brother Kalu Vijay involved in many illegal activities in the area with the backing of the minister. One day, Vihangi accidentally collides with Kalu Vijay following which he tries to beat her but is saved by Ranja. Ranja and Kalu Vijay get involves in a heated argument which makes Kalu Vijay angry towards Ranja.