Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), formerly and commonly known as Tamil Nadu Fisheries University (TNFU), is a government fisheries university situated in Vettar River View Campus in the southern part of the city of Nagapattinam, Tamil Nadu, India.

It is one of the premier fisheries universities named after the former Chief Minister of Tamil Nadu J. Jayalalithaa.

Tamil Nadu Fisheries University Act, 2012 received the assent of the former President of the Republic of India Pranab Mukherjee in 2012.

The Chancellor and Pro-chancellor of the university are the Governor and the Minister for Fisheries Department of Tamil Nadu respectively.

The Vice-Chancellor is the main academic officer and administrator in its everyday functioning of the university who is appointed by the Government of Tamil Nadu.