K. P. Aruna Jayasekara (born 19 October 1964) is a former senior Sri Lanka Army officer, socialist politician and member of Parliament.

General Jayasekara is noted for commanding several deployments of Sri Lankan forces in UN peacekeeping missions and for commanding Task Force 08 (later 68 Division) in the 2008–2009 Sri Lankan Army Northern offensive, including the Battle of Puthukkudiyirippu.

The 4th Battalion established in 1985 under the command of Lieutenant Colone Lakshman Algama, had taken part in counter-insurgency operations against the JVP insurrection and the LTTE during the Sri Lankan Civil War.

[1][3] In overseas deployments, Jayasekera served as the Deputy Contingent Commander of MINUSTA, lead the delegation Mali to reconnaissance on pre-deployment of troops under MINUSMA.

He took part in the India – Sri Lanka Joint Exercise ‘MITRA SHAKTI - 2015’ and TEMTEST in Jakartha - Indonesia.