Isac von Krusenstierna (born 14 January 1998) is a Swedish orienteering competitor who represents the club OK KÃÂ¥re.
Krusenstierna won a gold medal in sprint at the 2021 World Orienteering Championships in Doksy, ahead of Kasper Fosser. In the 2016 Junior World Orienteering Championships, he received three medals, with a silver in the relay event and bronze medals in the classic and sprint. He won an additional silver medal in the 2018 relay event, held in Hungary.