Shanakiyan Ragul Rajaputhiran Rasamanickam (born 20 September 1990) is a Sri Lankan Tamil politician and Member of Parliament.
Rasamanickam was born on 20 September 1990. He is the grandson of former MP S. M. Rasamanickam. Rasamanickam was educated at Trinity College, Kandy.
Rasamanickam was the Sri Lanka Freedom Party's organiser in Paddiruppu. He was an associate of the Rajapaksa family and extremist Buddhist monk Sumanarathna, and a supporter of paramilitary leader Pillayan. He is currently a member of Ilankai Tamil Arasu Kachchi.
Rasamanickam contested the 2015 parliamentary election as one of the United People's Freedom Alliance's (UPFA) candidates in the Batticaloa District, but the alliance failed to win any seats in the district. He contested the 2020 parliamentary election as a Tamil National Alliance electoral alliance candidate in Batticaloa District and was elected to the Parliament of Sri Lanka. He was reelected in 2024.