Takehiro Tomiyasu has signed a new deal at Arsenal until the summer of 2026.
The contract includes an option to extend the deal by a further 12 months and is subject to the completion of regulatory processes.
Japan international Tomiyasu, 25, has been at the Emirates since joining from Bologna in 2021 and has made 73 appearances in all competitions.
Gunners manager Mikel Arteta said: "We are so pleased to have Tomi commit his future with us. Together with his natural ability and strength, Tomi’s attitude, mentality and values are first class.
"Tomi is loved by everyone and has been an integral part of the squad since joining us. The way he trains, with his desire and determination to be the best version of himself every day is admirable.
"We look forward to continue working with Tomi in the future years.”
