Selvadurai Mahalingam (16 January 1926 – 3 November 2015) was a Sri Lankan Tamil mechanical engineer and academic.

Mahalingam was born on 16 January 1926 in Alaveddy in northern Ceylon.

[1] He was educated at Maxwell School and Victoria College in Malaya.

[1][3][5] In 1958 he wrote highly acclaimed research paper on vibration, Vibration of Branched System: A Displacement Excitation Approach, which was published in the Journal of Applied Mechanics.

[8] He died on 3 November 2015 at the private North Central Hospital in Jaffna.