R. Ponnappan or R. Ponnappanar (11 April 1921 – 12 October 1976) was an Indian politician who served as a Congressional leader from the Kanyakumari district and a Member of the Legislative Assembly.
He was elected as a Member of the Legislative Assembly of Travancore-Cochin Legislative Assembly in 1952 from Killiyur constituency by defeating A. Gabriel of Congress.
The total number of valid votes cast in the election was 25,512.
[1] He won the interim election in 1954 from the same constituency against Gabriel.
He died on 12 October 1976 in an aircraft accident en route to Chennai.