Weerasinghe Mallimarachchi (6 November 1929 - 24 October 1994) was a Sri Lankan politician who served as mayor, congressman, and cabinet minister. He was in the United National Party government from 1990 until his assassination.
His political life was cut short when he was assassinated by a female suicide bomber of the Liberation Tigers of Tamil Eelam (LTTE) while attending an election rally in support of Gamini Dissanayake, for the Presidential election of 1994.