Orest Meleschuk

Orest B. "The Big O" Meleschuk (born April 11, 1940) is a Canadian former curler of Ukrainian descent. He was one of Manitoba's best curlers during the 1960s and 1970s and has won a number of championships and major bonspiels. His greatest curling triumph came in 1972 when he won the Manitoba, Canadian and World Championships of curling.

Meleschuk married Patrica Frances McSherry and they have two children, Sean and Karin.

Meleschuk was involved in the first Battle of the Sexes curling match, in which he lost to Vera Pezer's team.

Meleschuk currently lives in Selkirk, Manitoba.