Aron Kiviharju was born in Esbjerg, Denmark.
Kiviharju played for the Finnish club HC TPS even though he got selected by the Dubuque Fighting Saints of the USHL in 2022.
In 2022-2023, Kiviharju 21 games and recorded three assists. He also played 22 games for the Jr. team and totaled two goals and 18 assists.
This past season, a serious knee injury that required surgery ended his campaign early. He played seven games and scored one goal and one assist.