Jaroslav Kristek (born March 16, 1980) is a Czech professional ice hockey right winger currently playing for HC Brumov-Bylnice in the Czech fourth division. He was drafted in the second round, 50th overall, by the Buffalo Sabres in the 1998 NHL Entry Draft and played 6 games for them during the 2002–03 season. The rest of his career has been spent in various European leagues, mainly the Czech Extraliga. He won a Slovnaft Extraliga championship with HC Košice in 2010–11.

Kristek played two seasons in the Western Hockey League with the Tri-City Americans before joining the Sabres' American Hockey League affiliate, the Rochester Americans, for the 2000–01 season. In three seasons with Rochester, Kristek appeared in 125 games and scored 23 goals. He also appeared in six NHL games with Buffalo during the 2002–03 season, recording no points.

Kristek returned to his native Czech Republic in 2003, initially signing with HC Sparta Praha on May 7 but transferring to HC České Budějovice a few months later without playing any games for Sparta.^[1][2] He later moved on to play in Slovakia.