Bob Loughman Weibur (born 8 March 1961) is a Vanuatuan politician and the incumbent Prime Minister of the Republic of Vanuatu as of 20 April 2020.
A member of the Vanua'aku Pati, he was first elected to Parliament as MP for Tanna in the general election on 6 July 2004. He was re-elected in 2008 and 2012. In March 2013, following a change in government, new Prime Minister Moana Carcasses appointed him Minister for Education.
Like other members of the Vanua'aku Pati, he crossed the floor on 15 May 2014 to help bring down the Carcasses government. New Prime Minister Joe Natuman maintained Loughman at his post as Minister for Education. He lost office on 11 June 2015 when the Natuman government was ousted in a motion of no confidence.
Since 2018 he is the leader of the Vanua'aku Pati.
Since 20 April 2020, Loughman has been in office as Prime Minister of Vanuatu.