Liam Kelly has joined on loan from Queen’s Park Rangers.
The goalkeeper signs up for the remainder of the 2020/21 campaign, providing further competition for the number one jersey.
Kelly, 24, moved to the English Championship in June 2019, featuring 22 times for the Rs.
Previously, the Scotland call-up was with Livingston, impressing over two spells following his move from Glasgow Rangers.
“I’m grateful for the opportunity Motherwell have offered me,” said the goalkeeper.
“My objective is to play games. I know there’s strong competition here and I will have to earn my place.
“I’m ready and available when called upon. We’ve got a good squad and need to start picking up results.”
Kelly will wear the number 13 jersey vacated by Jordan Archer.
“Liam will strengthen our options in the goalkeeping department, with Jordan Archer having left us,” interim manager Keith Lasley said.
“He has already proven his ability at this level, playing a big part in Livingston’s success and also earning the recognition of an international call-up.”