Ratnayake Mudiyanselage Samantha Ranasinghe is a Sri Lankan politician. He contested the 2024 Sri Lankan parliamentary election and was elected to the 17th Parliament of Sri Lanka from the Kegalle Electoral District as a member of the National People's Power, replacing Kosala Jayaweera, who died on 6 April 2025.

His appointment was confirmed by the Election Commission of Sri Lanka on 8 April 2025 and was sworn in on 8 May 2025.