1991 North Hertfordshire District Council election

The 1991 North Hertfordshire District Council election was held on 2 May 1991, at the same time as other local elections across England and Wales. There were 17 out of 50 seats on North Hertfordshire District Council up for election, being the usual third of the council.

The Conservatives made a net loss of three seats, and only narrowly retained their majority on the council.

Overall results
The overall results were as follows:

Ward results
The results for each ward were as follows. An asterisk(*) indicates a sitting councillor standing for re-election.

The Letchworth South East seat was previously held by Tony Quinn, who had been elected in 1987 as an SDP councillor. Following the demise of the continuing SDP in 1990, he had joined Labour for the last year of his term.