Oscar Karl Niclas Hiljemark (Swedish pronunciation: ; born 28 June 1992) is a Swedish professional footballer who plays as a midfielder for Italian club Genoa.
Hiljemark played for Swedish top team IF Elfsborg. He was chased by many clubs in Sweden in his youth but decided to sign a youth contract with Elfsborg in 2008. He participated in many national team camps as a young player, and was predicted a great career for his mature style of play.
Two years after signing with Elfsborg, at the age of 18, he earned a place in the senior team after playing in the Elfsborg and Sweden national youth teams. During his first year in the Elfsborg senior team he played 4 games in Allsvenskan and 2 games in the Europa League qualifications. He played 30 minutes in the Europa League play-off match against Napoli. The game ended with a 2–0 loss for Elfsborg after two goals from Edinson Cavani.