The 1990–91 Northern Premier League season was the 23rd in the history of the Northern Premier League, a football competition in England. Teams were divided into two divisions; the Premier Division, won by Witton Albion, and the First Division, won by Whitley Bay. It was known as the HFS Loans League for sponsorship reasons.
Premier Division
The Premier Division featured three new teams:
Chorley relegated from the Football Conference
Droylsden promoted as runners-up from Division One
Leek Town promoted as champions from Division One
League table
Results
Division One
Division One featured four new teams: Bridlington Town, promoted as champions of the NCEFL Premier Division Caernarfon Town and Rhyl, relegated from the NPL Premier Division Warrington Town, promoted as champions of the NWCFL Division One
Promotion and relegation
In the twenty-third season of the Northern Premier League Witton Albion (as champions) were automatically promoted to the Football Conference. None of the Premier Division sides were relegated, but South Liverpool folded at the end of the season, so three sides were promoted to the Premier Division; First Division winners Whitley Bay, second placed Emley and fourth placed Accrington Stanley. Colwyn Bay, Guiseley and Knowsley United were admitted to take these teams' places.
Cup results
Challenge Cup: Southport bt. Buxton President's Cup: Witton Albion bt. Fleetwood Town Northern Premier League Shield: Between Champions of NPL Premier Division and Winners of the Presidents Cup. Witton Albion bt. Stalybridge Celtic 1 1 As Witton Albion won both the Northern Premier League and the Presidents cup, Stalybridge Celtic qualified as 2nd placed team of the NPL.