Kaiyne Woolery is the latest acquisition ahead of the 2021/22 campaign.
The forward has signed on a three-year deal, joining after leaving Tranmere Rovers. The move is subject to international clearance.
“Kaiyne is a player I’ve admired for a few years now,” manager Graham Alexander said of his new acquisition.
“He’s always caused my teams problems with his pace and goal threat. I’m very happy to bring him to Motherwell.
“I believe his best years are ahead of him and we all look forward to working with him. I know he will help us improve our attacking threat.”
Wollery was a key figure in Tranmere’s play-off finish in League Two last season, netting 11 in 52 matches.
He previously was with Swindon Town, where he moved for a six-figure fee from Wigan Athletic.
The 26-year-old made his first professional appearances at Bolton Wanderers, and has also spent time on loan with Forest Green Rovers, Notts County and Tamworth.