Leif Robert Kronberg (born August 15, 1976 in Göteborg, Västra Götaland) is a Swedish male hurdler of Serbian^{[citation needed]} descent.

He finished 8th in the 110m hurdles final at the 2000 Olympics. He competed again in the 2004 Olympics, reaching the semi-finals. He has also been a regular competitor in the World Championships in Athletics, being present at every event since 1997. His best position has been a 5th place in the 2003 World Championships held in Edmonton.

He finished 7th in the final of the 110m hurdles at the 2002 European Athletics Championships in Munich and 5th in the final of the same event in the 2006 European Athletics Championships in Gothenburg.

Kronberg is also a Swedish national champion in inline hockey while playing for the Gothenburg Jokers.^{[citation needed]}