Munasinghe Kariyawasam Appuhamilage Don Somadasa Gunawardana (6 March 1947 – 19 January 2016) was a Sri Lankan politician and a former member of Parliament and government minister.

[3] After completing his GCE Ordinary Level education he obtained a certificate in agriculture.

[2] Gunawardana joined the Sri Lanka Freedom Party (SLFP) and in 1982 became active in politics.

[13] On 20 January 2004 the SLFP and the Janatha Vimukthi Peramuna formed the United People's Freedom Alliance (UPFA).

[20][21] Gunawardana left the UPFA in November 2014 to support common opposition candidate Maithripala Sirisena at the 2015 presidential election.

[32][33] In July 2015 Gunawardana and other supporters of President Sirisena formed the United National Front for Good Governance (UNFGG) to contest the parliamentary election.

[41][42] Gunawardana was appointed as a UNFGG National List MP following the parliamentary election in August 2015.

[48][49] On 11 December 2015 Parliament granted Gunawardana three months leave of absence for health reasons.