Somaweera Chandrasiri (11 February 1909 – 11 July 1971) was a Sinhalese poet and Ceylonese politician.

Although he was not a member of the Lanka Sama Samaja Party (LSSP) Chandrasiri edited and published a pro-LSSP weekly newspaper Nidahasa.

[5] He retained the seat at the 2nd parliamentary election, held between 24 May 1952 and 30 May 1952, receiving 41.19% of the total vote.

[11] In 1970 he was appointed the Deputy Minister of Cultural Affairs in the Second Sirimavo Bandaranaike cabinet.

In September 1970 a Tamil militant, Pon Sivakumaran, attempted to assassinate Chandrasiri by placing a time bomb under Chandrasiri's car when he was visiting Urumpirai Hindu College however the bomb exploded whilst nobody was in the car.