Dariusz Robert Slowik (born 15 August 1977) is a retired Polish-Danish-Canadian discus thrower.
Born in Poland, Slowik grew up in Denmark, and for Denmark he competed at the 1996 World Junior Championships and the 1999 European U23 Championships without reaching the final. He also became Danish discus champion in 1998.
Following studies in Canada between 2000 and 2002, Slowik's Danish citizenship was revoked, barring him from participating at the 2002 European Athletics Championships. He proceeded to gain Canadian citizenship.
For his new, North American coutry Slowik won the bronze medals at the 2006 Commonwealth Games and the 2007 Pan American Games. His personal best throw was 64.56 metres, achieved in July 2004 in Allston.