Ondřej Raab (born 20 June 1973 in Jablonec nad Nisou)[1] is a Czech slalom canoeist who competed at the international level from 1990 to 2006.
He won two silver medals in the K1 team event at the European Championships.[2]
Competing at the 2004 Summer Olympics in Athens in the K-1 event, he finished ninth in the qualification round, thus progressing to the semifinals. In the semifinals he finished fourteenth, failing to reach the top ten and the final round.