Arttu Mikael Lötjönen (born 28 January 2004) is a Finnish professional footballer who plays as a centre-back for Veikkausliiga club KuPS.
[1] Born in Pori, Lötjönen started to play football in a youth team of local club Toejoen Veikot (TOVE), before joining a rival club FC Jazz.
He made his senior debut with the Jazz first team in the third-tier league Kakkonen in 2020.
In January 2023, Lötjönen joined the Italian club Sampdoria, and was first assigned to their U19 academy team playing in a youth league Primavera 1.
[5] On 4 December 2024, Lötjönen returned to Finland and signed a two-year contract with reigning double champions Kuopion Palloseura (KuPS), with a deal including a one-year option.