Ratu Jekesoni Lewenilovo Yavalanavanua (born 3 October 1952) is a Fijian politician and member of the Senate of Fiji. He hails from the chiefly village of Somosomo Taveuni. He is the Secretary General of the Council of Chiefs of the Vanua of Lalagavesi (Cakaudrove). He spent 17 years working under the Ministry of Fijian Affairs as Assistant Roko Tui, Acting Roko Tui and Executive Officer. In 2006 he was nominated as a Senator under the Government regime.

Yavalanavanua attended Derrick Technical Institute (now FIT) where he received his diploma in Trade Mechanical Engineering and Boiler Maker. He was formerly employed by the Fiji's Forest Industry and Fiji Sugar Corporation, and later joined the Ministry of Fijian Affairs Board where he was employed for 17 years. In 2006 he was a nominee of the Prime Minister to the Senate.