G. S. Paramashivaiah (Kannada:ಜಿ.ಎಸ್. ಪರಮಶಿವಯ್ಯ)(born: February 2, 1919 at Gubbi, Tumkur District), is a renowned Irrigation Expert and Chief Engineer from the state of Karnataka, India. He worked in various capacities in the Public Works and Irrigation departments of Karnataka state and retired as a Chief Engineer of the Irrigation Department.