2017–18 North West Counties Football League

The 2017–18 North West Counties Football League season (known as the Hallmark Security League for sponsorship reasons) was the 36th in the history of the North West Counties Football League, a football competition in England. It was also the last season to have a single Division One. Teams were divided into two divisions: Premier Division and Division One.

The constitution for Step 5 and Step 6 divisions for 2017–18 was announced by the FA on 26 May 2017, and ratified by the league at its AGM on 17 June.