The 15th Parliament of Sri Lanka is the current Parliament of Sri Lanka, with the membership determined by the results of the 2015 parliamentary election held on 17 August 2015. The parliament met for the first time on 1 September 2015. According to the Constitution of Sri Lanka the maximum term of parliament is 5 years therefore the 16th Parliament of Sri Lanka will meet for the first time no later than 1 September 2020.

The 15th parliamentary election was held on 17 August 2015. The incumbent United National Party (UNP) led United National Front for Good Governance (UNFGG) won 106 seats, an increase of 46 since the 2010 election, but failed to secure a majority in Parliament. The main opposition United People's Freedom Alliance (UPFA) won 95 seats, a decline of 49. The Tamil National Alliance (TNA), the largest party representing Sri Lankan Tamils, won 16 seats, an increase of two from 2010. The remaining eight seats were won by Janatha Vimukthi Peramuna (6), Sri Lanka Muslim Congress (1) and Eelam People's Democratic Party (1).

The new parliament was sworn in on 1 September 2015.Karu Jayasuriya was elected Speaker, Thilanga Sumathipala as the Deputy Speaker and Selvam Adaikalanathan as the Deputy Chairman of Committees.Lakshman Kiriella was appointed Leader of the House and Gayantha Karunathilaka was appointed Chief Government Whip.

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