Mark Giordano (born October 3, 1983) is a Canadian professional ice hockey defenceman, an alternate captain for the Calgary Flames of the National Hockey League (NHL). He was a leading scorer amongst defencemen in two seasons with the Owen Sound Attack of the Ontario Hockey League (OHL) but went unselected in the NHL Entry Draft. The Flames signed him a contract in 2004, and after playing two seasons in the American Hockey League (AHL), he made his NHL debut in 2006. He spent the 2007–08 season with Dynamo Moscow of the Russian Super League before returning to the Flames the following season. Internationally, Giordano played with Team Canada at the 2010 IIHF World Championship.