Martin Collegiate, also known as Martin Collegiate Institute or MCI, is a high school located in the Rosemont/Mount Royal neighbourhood in the north end of Regina, Saskatchewan, Canada.

A part of Regina Public Schools, it is a designated community school, and currently has a student body population of approximately 757.

Martin Collegiate is named for William Melville Martin, a lawyer and politician who served from 1916 until 1922 as Saskatchewan's second premier.

[2] He also served as Member of Parliament for Regina.

William Martin was also a judge of the Saskatchewan Court of Appeal for thirty-nine years (1922-1961), including twenty years as Chief Justice of Saskatchewan (1941-1961).