Thomas Johnson Nossiter (24 December 1937 – 12 January 2004) was Professor of Government at the London School of Economics from 1989 until 1994.

Nossiter completed his higher education at the University of Oxford, as an undergraduate at Exeter College and a graduate at Nuffield.

His thesis, completed under the auspices of the Faculty of Modern History and submitted in 1968, was entitled, Elections and political behaviour in County Durham and Newcastle, 1832-74.

He was first appointed to the London School of Economics in 1973 and for more than twenty years he taught an entire generation of students in the Government department.

In 1991 he was appointed an Honorary Citizen of Trá Lí (Tralee), Contae Chiarraí (County Kerry) in recognition of his endeavours in the field.