The sponsorship means that they will have signage inside and outside the ground that advertises their three divisions, namely Vehicle Repairs, Information Technologies and Signs & Graphics.
M&M have had a presence in Leek since opening their vehicle repair centre in Higher Woodcroft in 1990.
Leek Town FC director Jon Eeles commented: "We are really pleased to have M&M Group back as a sponsor at the club.
We are making great strides in improving the club both on and off the field and the support of great local businesses such as M&M helps us to continue this improvement plan."
Pictured: Leek Town director Jon Eeles and M&M Group MD Mick Whitehead with the new signage on the main stand.