The 1988–89 Northern Premier League season was the 21st in the history of the Northern Premier League, a football competition in England.
It was known as the HFS Loans League for sponsorship reasons.
In the twenty-first season of the Northern Premier League Barrow (as champions) were automatically promoted to the Football Conference.
Meanwhile, Worksop Town were relegated; these two sides were replaced by First Division winners Colne Dynamoes and second placed Bishop Auckland.
Sutton Town left the First Division at the end of the season and were replaced by newly admitted Emley and Rossendale United.