Blair Atcheynum (Born April 20, 1969 in Estevan, Saskatchewan) is a retired profession ice hockey player.

Atcheynum was selected by the Hartford Whalers in the third round, fifty second overall in the 1989 NHL Entry Draft . Atcheynum played right wing.

He spent the majority of his career in the minor leagues but was able to break into the NHL for 196 games over four seasons. He got his first taste of NHL during the 1992-93 NHL season when he played four games for the Ottawa Senators. It would take another four years to make it as a regular in the NHL when he played 61 games during the 1997-98 NHL season for the St. Louis Blues. The next year he was selected in the expansion draft by the newly formed Nashville Predators. He played 53 in Nashville before being traded back to St. Louis for a sixth-round draft pick in the 2000 NHL Entry Draft (Zbynek Irgl).