Luiz's return marks his second spell in the Villans uniform after previously leaving for Italy.
"Aston Villa are delighted to announce that Douglas Luiz has joined the club on loan from Juventus," the club said in a statement on their website on Thursday.
“The Brazil international left Villa in the summer of 2024 to join the Italian giants, but will now spend the remainder of the 2025/26 season at Villa Park.”
The 27-year-old returns to Villa Park after his loan spell at Nottingham Forest was terminated early.
