| Associate Justice
|
Term served
|
Notes
|
| William H. DeWitt
|
(1889–1897)
|
|
| Edgar N. Harwood
|
(1889–1895)
|
|
| William Henry Hunt
|
(1895–1900)
|
Resigned
|
| Horace R. Buck
|
(1897)
|
Died in office
|
| William Trigg Pigott
|
(1897–1903)
|
Appointed
|
| Robert L. Word
|
(1900–1901)
|
Appointed
|
| George R. Milburn
|
(1901–1907)
|
|
| William L. Holloway
|
(1903–1926)
|
Died in office
|
| Henry C. Smith
|
(1907–1913)
|
|
| Sydney Sanner
|
(1913–1918)
|
|
| William Trigg Pigott
|
(1918)
|
Appointed; previously served as Associate Justice, 1897–1903
|
| Charles H. Cooper
|
(1919–1924)
|
Resigned
|
| John Hurly
|
(1919–1921)
|
|
| George Y. Patten
|
(1919)
|
Appointed to newly created seat; resigned
|
| John A. Matthews
|
(1919–1920)
|
Appointed; subsequently served as Associate Justice, 1925–1937
|
| Roy E. Ayers
|
(1922)
|
Appointed to newly created seat, January 1922; resigned November 22, 1922
|
| Albert J. Galen
|
(1921–1933)
|
|
| Frank B. Reynolds
|
(1921–1922)
|
Died in office
|
| George W. Farr
|
(1922–1923)
|
Appointed
|
| Albert P. Stark
|
(1923–1929)
|
|
| Wellington D. Rankin
|
(1924–1925)
|
Appointed
|
| John A. Matthews
|
(1925–1937)
|
Previously served as Associate Justice, 1919
|
| Warren Toole
|
(1926–1927)
|
Appointed
|
| Henry L. Myers
|
(1927–1929)
|
Appointed
|
| Albert H. Angstman
|
(1929–1934)
|
Subsequently served as Associate Justice 1937–1942, 1945–1961 for a total of 28 years
|
| Sam C. Ford
|
(1929–1933)
|
Subsequently Governor of Montana, 1941 to 1949
|
| Ralph J. Anderson
|
(1933–1939)
|
|
| Sam V. Stewart
|
(1933–1939)
|
Previously Governor of Montana, 1913–1921; State Representative, 1931–1933; died in office, 1939
|
| Claude F. Morris
|
(1935–1947)
|
|
| Albert H. Angstman
|
(1937–1942)
|
Previously served as Associate Justice, 1929–1934; subsequently served 1945–1961
|
| Ralph L. Arnold
|
(1939–1941)
|
Appointed
|
| Leif Erickson
|
(1939–1945)
|
|
| Albert Anderson
|
(1941–1945)
|
|
| Hugh R. Adair
|
(1943–1946)
|
Subsequently served as Chief Justice, 1947–1956, and again as Associate Justice 1957 – 1968
|
| Albert H. Angstman
|
(1945–1961)
|
Previously served as Associate Justice, 1929–1934, and 1945–1961
|
| Edwin K. Cheadle
|
(1945–1947)
|
Resigned
|
| I. W. Choate
|
(1947–1949)
|
Appointed
|
| Fred L. Gibson
|
(1947–1948)
|
Appointed
|
| Lee Metcalf
|
(1947–1953)
|
Subsequently U.S. Representative, 1953–1961; U.S. Senator, 1961–1978
|
| R. V. Bottomly
|
(1949–1961)
|
|
| Harrison J. Freebourn
|
(1949–1954)
|
|
| Forrest H. Anderson
|
(1953–1956)
|
Subsequently served as Governor of Montana, 1969–1973
|
| Horace S. Davis
|
(1954–1957)
|
Appointed
|
| Hugh R. Adair
|
(1957–1968)
|
Previously served as Associate Justice, 1943–1946 and as Chief Justice, 1947–1956
|
| Wesley Castles
|
(1957–1977)
|
Appointed
|
| Stanley M. Doyle
|
(1961–1967)
|
Appointed; resigned
|
| John C. Harrison
|
(1961–1994)
|
Longest serving justice in history of the court
|
| Frank I. Haswell
|
(1967–1978)
|
Appointed; subsequently served as Chief Justice, 1978–1985
|
| John W. Bonner
|
(1969–1970)
|
Previously Governor of Montana, 1949 to 1953; Died in office, 1970
|
| Gene B. Daly
|
(1970–1983)
|
Appointed, reelected
|
| Daniel J. Shea
|
(1977–1985)
|
|
| John C. Sheehy
|
(1978–1991)
|
Appointed
|
| Frank B. Morrison
|
(1981–1987)
|
Resigned
|
| Fred J. Weber
|
(1981–1995)
|
|
| J. C. Gulbrandson
|
(1983–1989)
|
| William E. Hunt
|
(1985–2000)
|
|
| R. C. McDonough
|
(1987–1993)
|
|
| Diane Barz
|
(1989–1990)
|
First woman to serve on the court; resigned
|
| Terry N. Trieweiler
|
(1991–2003)
|
|
| Karla M. Gray
|
(1991–2000)
|
Subsequently served as Chief Justice, 2000 to 2008
|
| Charles E. Erdmann
|
(1995–1997)
|
|
| Jim Regnier
|
(1997–2004)
|
|
| John Warner
|
(2003–2009)
|
|
| W. William Leaphart
|
(1995–2010)
|
Elected 1994; re-elected 2002
|
|
| James C. Nelson
|
(1993–2012)
|
Appointed by Governor Marc Racicot; elected 1994; re-elected 1996, 2004
|
| Brian Matthew Morris
|
(2005–2013)
|
Elected 2004; re-elected 2012
|
| Patricia O'Brien Cotter
|
(2001–2016)
|
Elected 2000; re-elected 2008
|
| Mike Wheat
|
(2010–2017)
|
Elected in 2010; re-elected 2014
|