Juanito "Johnny" Reyes Remulla Sr. (Tagalog: [hwɐˈnitɔ rɛˈmuljɐ]; April 14, 1933 – December 29, 2014) was a Filipino lawyer and politician who served as the longest sitting governor of Cavite.

He was the senior partner in the Remulla, Estrella & Associates Law Office and the chairman of the board of Covelandia Island Resort in Binakayan in Kawit, Cavite at the same time.

Owing to his brilliant scholastic record, Remulla was chosen awardee of the Colombo Plan Scholarship, Institute of Local Government, in Birmingham, England (1966–67).

His two brief stints in the executive office must have so impressed the Caviteños that in the election of delegates to the 1971 Constitutional Convention Remulla, 38, the youngest candidate, garnered the highest number of votes, besting his three more senior and experienced colleagues.

Finally, in the election for governor on January 30, 1980, Remulla, the KBL candidate, obtained an overwhelming majority over his Nacionalista opponent, Fernando Campos.