S. Gnanathiraviam (சா.ஞானதிரவியம்)
Constituency: Tirunelveli

Born/Date of Birthday: 15 July 1964
Place of Birth: Avaraikulam, Tirunelveli district, Tamil Nadu
Political party: Dravida Munnetra Kazhagam
Educational Qualifications: S.S.L.C.
Educated at: Punith Teresa Higher Secondary School, Vadakankulam, Tirunelveli, Tamil Nadu

Marital Status: Married
Date of Marriage: 31 Dec 1982
Spouse's Name: Smt. Sutesha Hemalatha
No. of Sons: Xavier Selva Raja, Dinakaran
No.of Daughters: Sujithra
Parent(s): Shri Chelladurai Samiyadiyan, Smt. Chellammal
Permanent Address: 4370, Panchayat Office Street, Avaraikulam, Radhapuram Taluk, Distt. Tirunelveli - 627133, Tamil Nadu
Tel  (04637) 230719, 09443120619 (M)
Official Website: anathiraviam.com

Samiyadiyan Gnanathiraviam is an Indian politician. He was elected to the Lok Sabha, lower house of the Parliament of India from Tirunelveli, Tamil Nadu in the 2019 Indian general election as member of the Dravida Munnetra Kazhagam.