Kristoffer Ajer
Centre-back · Celtic · Norway
About Kristoffer Ajer
Kristoffer Ajer is a Norwegian centre-back standing at 6ft 6in, one of the tallest defenders in the Premier League. After winning nine domestic trophies with Celtic, he joined Brentford (ENG) in 2021 for £13.5m as one of their first Premier League signings. A consistent performer and regular Norway international with 48 caps, he is an experienced and dependable presence at the heart of Brentford (ENG)'s defence.
Kristoffer Ajer's story
IK Start & Celtic
Born in Rælingen on 17 April 1998, Ajer played senior football for IK Start in Norway's Tippeligaen before Celtic signed him in January 2016. After a loan spell at Kilmarnock, he became a key figure at Celtic Park, making 176 appearances and winning nine domestic trophies across five years including three consecutive Scottish Premiership and League Cup trebles.
Brentford's First Premier League Centre-Back
When Brentford (ENG) won promotion to the Premier League in 2021, they moved quickly to sign Ajer from Celtic for an initial £13.5m. The Norweigan brought immediate top-flight pedigree and has been a cornerstone of their Premier League defence. He appeared 24 times in the 2025-26 season.
Norway International
Ajer has been a regular for Norway since 2018, accumulating 48 caps and 2 goals as of early 2026. He is part of a golden generation of Norwegian football that includes Erling Haaland and Martin Ødegaard.
Did you know?
- 🏆 Ajer won nine domestic trophies at Celtic, including three consecutive Scottish trebles (Premiership, Cup and League Cup) from 2017/18 to 2019/20.
- 📏 Standing at 6ft 6in (198cm), Ajer is one of the tallest outfield players in Premier League history, giving Brentford a commanding aerial presence in both boxes.
- 🇳🇴 Ajer is part of the same Norway golden generation as Erling Haaland and Martin Ødegaard, and has represented Norway at international level since 2018.
Honours
- Scottish Premiership x3: 2018, 2019, 2020 — Celtic
- Scottish Cup x3: 2018, 2019, 2020 — Celtic
- Scottish League Cup x4: 2017, 2018, 2019, 2020 — Celtic
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