Arguably, any super-powered hero is a clone of Superman but finding extremely similar knock-offs and tributes is harder. There were several Canadian supers during the 1940s that emulated all or part of the Superman idea (ie, super-strength, costume, secret identity) like Commander Steele, Nelvana, etc. Has anyone mentioned Marvel Man/Miracleman from the UK yet?
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First Appearance: Super Shamou (Inuit Broadcasting Corporation, 1980s)
Powers/Abilities: Flight. Other powers unknown
History: Super Shamou is an Inuk (Eskimo) super hero. He protects the wilderness of Canada, looking out for unwary travellers who fall foul of the unforgiving conditions, and children in particular. As well as rescuing such individuals, he also makes sure to teach them some realities of life in the North.
Comments: Super Shamou is the world's first Inuk (Eskimo) super hero. He was created by Barney Pattunguyak and Peter Tapatai © Inuit Broadcasting Corporation. This comic was drawn by Nick Burns and the translations were done by Micah Lightstone.
http://www.internationalhero.co.uk/s/supshamo.htm