Tamil Nadu Public Service Commission (TNPSC) is a department of the government of Tamil Nadu which is responsible for governing the recruitment of personnel into the state's public service.

If you forget TNPSC Registration Number, the you can do its help line numbers which is mentioned below :

Call to: 04425300308
Email to: contacttnpsc@gmail.com

Sample Email Format:
Sir, I am [your Name] i lost my Register Number due to some reasons so please send my register using my Application Number and Date of Birth.
My Application No: [your application no]
Date of Birth: [ your dob ]

TNPSC profile :
Formation 1929
Type Constitutional body
Purpose Recruitment
Location Frazer Bridge Road, VOC Nagar, Park Town, Chennai-600003, Tamil Nadu
Region served Tamil Nadu
Chairman Dr.K.Arulmozhi, I.A.S (R)
Secretary M Vijayakumar, IAS
Controller of Examinations V Shobhana, IAS
Staff 400+