Tatu Valdemar Varmanen (born 9 July 1998) is a professional footballer who plays for Swedish club Östers IF.
A product of Brommapojkarna's youth academy, Varmanen made his league debut for the club on 17 April 2016 in a 2-0 home victory over Piteå, coming on as an 80th minute substitute for Nemrut Awrohum.
[2] In March 2017, Varmanen moved to Veikkausliiga side Inter Turku, before being sent on loan to JJK.
[8] He made his debut for Öster on 11 April 2021 playing full 90 minutes in a match against Örgryte.
[10] After Öster had won the promotion to Allsvenskan at the end of 2024, Varmanen extended his contract with the club in late November 2024.