Arcot Ranganatha Mudaliar (29 June 1879 – 8 July 1950) was an Indian politician and theosophist from Bellary.
Ranganatha Mudaliar established the Young Men's Indian Association in 1914 and constructed the Gokhale Hall in 1915.
Ranganatha Mudaliar joined politics at the instance of the Raja of Panagal of the Justice Party.
Mudaliar served as the Minister of Public Health and Excise in the government of P. Subbarayan from 1926 to 1928, when he resigned protesting the arrival of the Simon Commission.
Following his resignation, Ranganatha Mudaliar joined the Indian National Congress and served as the first Commissioner of the Thirumala-Tirupathi devasthanam board from 1935 to 1939.