- Alexander C. Rutherford 1905-09-02 to 1910-05-26
- Arthur L. Sifton 1910-05-26 to 1917-10-30
- Charles Stewart 1917-10-30 to 1921-08-13
- Herbert Greenfield 1921-08-13 to 1925-11-23
- John E. Brownlee 1925-11-23 to 1934-07-10
- Richard G. Reid 1934-07-10 to 1935-09-03
- William Aberhart 1935-09-03 to 1943-05-23
- Ernest C. Manning 1943-05-31 to 1968-12-12
- Harry E. Strom 1968-12-12 to 1971-09-10
- Peter Lougheed 1971-09-10 to 1985-11-01
- Donald Getty 1985-11-01 to 1992-12-13
- Ralph Klein 1992-12-14 to ...
Other lists of first ministers:
Prime Minister - B.C. - Manitoba - N.B. - Nfld.-Lab. - N.S. - Ontario - P.E.I. - Quebec - Sask. - Yukon - N.W.T. -Nunavut
See other lists of incumbents.