Libor Charfreitag (born 11 September 1977 in Trnava) is a former hammer thrower from Slovakia.

His personal best throw is 81.81 metres, achieved in June 2003 in Prague.

He attended Southern Methodist University in Dallas, Texas.

He had a highly successful season in 2010: he won the gold medal at the 2010 European Athletics Championships, beat all-comers at the 2010 IAAF Continental Cup and finished third in the inaugural IAAF Hammer Throw Challenge series, finishing behind Asian throwers Koji Murofushi and Dilshod Nazarov.

This biographical article relating to Slovak athletics is a stub.