Woolford, 34, has a wealth of Football League experience and counts Scunthorpe United, Bristol City, Millwall, Sheffield United, Fleetwood Town and Grimsby Town amongst his former clubs.
Manager Curtis Woodhouse told the club’s official website: “I’m delighted to welcome Martyn to Gainsborough Trinity, a player that will need no introduction having stared for some top league clubs.
"I believe Martyn will be vital in how we will go about playing next season and will be a massive help to the lads around him. Technically very, very gifted, with an incredible engine, Martyn will be a big hit with our supporters and will set the standards to the younger lads, it’s a real coup for the football club getting somebody of Martyn’s calibre."
Meanwhile, the Holy Blues have confirmed the departure of Adam Drury following a chance of work circumstances that meant he could no longer commit to training and matches.
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