The 30-year-old played a part in helping Rovers to the League Two play-offs last season but has made the short trip to Somerset to sign a two-year contract.
Having played the entirety of his career in the EFL amassing over 350 league appearances, manager Darren Sarll was thrilled by his latest acquisition.
“Lee is a winner and his experience and leadership will make him a big part of this squad,” he said.
“He’s yet another player who arrives having been part of a team that reached the play-offs last season and has all of the attributes we’re going to need to be a success in this division.”
Able to operate all across the back four and in defensive midfield, he started out at Wolves prior to helping Hereford United to promotion from League Two whilst on loan at Edgar Street.
A four-year stay at Port Vale followed where Collins made over 120 appearances, before spending time in the Championship with Barnsley.
Stints at Shrewsbury, Northampton and Mansfield followed prior to joining Forest Green in May 2017, where he in fact scored against the Glovers back in February of this year at the New Lawn.