Siksika 146 is an Indian reserve in southern Alberta, Canada. It has a land area of 696.54 km², making it the second-largest Indian reserve in Canada (after Blood 148, Alberta). It is located 87 kilometres (54 mi) southeast of Calgary. It is bordered by Vulcan County, Wheatland County, and the County of Newell, and is located at an elevation of 857 metres (2,812 ft). The Canada 2011 Census reported a population of 2,972 inhabitants.