List of justices of the Supreme Court of Canada by court composition

The Supreme Court of Canada (Cour suprême du Canada), the highest court of Canada, and the final court of appeals in the Canadian justice system, is composed of nine justices—a chief justice and eight puisne judges—appointed by the Governor General-in-Council. Altogether, 88 persons have served on the Court since it was created in 1875; during this time there have been 18 chief justices.

The graphical timeline below lists the justices of the Supreme Court of Canada by court composition. As Supreme Court historians categorize eras in the court's history by the name of the presiding chief justice, the timeline is divided into sections, according to who was chief justice at the time. The incumbent puisne justices at the start of each court era are listed in order of their seniority at that time. Justices joining the Court during an era are listed below them in the order of their appointment. The bars are colour-coded to show the changes in seniority among the justices during each era.

Richards Court
The Richards Court era, under the leadership of William Buell Richards, lasted from September 30, 1875 to January 10, 1879.

Ritchie Court
The Ritchie Court era, under the leadership of William Johnstone Ritchie, lasted from January 11, 1879 to September 25, 1892. Ritchie had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Strong Court
The Strong Court era, under the leadership of Samuel Henry Strong, lasted from December 13, 1892 – November 18, 1902. Strong had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

H.-E. Taschereau Court
The H.-E. Taschereau Court era, under the leadership of Henri-Elzéar Taschereau, lasted from November 21, 1902 to May 2, 1906. Taschereau had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Fitzpatrick Court
The Fitzpatrick Court era, under the leadership of Charles Fitzpatrick, lasted from June 4, 1906 to October 21, 1918. He is the only chief justice to date, other than the Court's inaugural chief justice, Sir William Buell Richards, to have served in that position without having first been a puisne Justice on the court.

Davies Court
The Davies Court era, under the leadership of Louis Henry Davies, lasted from October 23, 1918 to May 1, 1924. Davies had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Anglin Court
The Anglin Court era, under the leadership of Francis Alexander Anglin, lasted from September 16, 1924 to February 28, 1933. Anglin had been a puisne Supreme Court justice for at the time of his elevation to chief justice. A sixth puisne justice position was created in 1927, bringing the Court to a total of seven justices.

Duff Court
The Duff Court era, under the leadership of Lyman Duff, lasted from March 17, 1933 to January 6, 1944. Duff had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Rinfret Court
The Rinfret Court era, under the leadership of Thibaudeau Rinfret, lasted from January 8, 1944 to June 22, 1954. Rinfret had been a puisne Supreme Court justice for at the time of his elevation to chief justice. Two additional puisne justice seats were created in 1949, bringing the Court to its current composition of nine justices.

Kerwin Court
The Kerwin Court era, under the leadership of Patrick Kerwin, lasted from July 1, 1954 to February 2, 1963. Kerwin had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

R. Taschereau Court
The R. Taschereau Court era, under the leadership of Robert Taschereau, lasted from April 22, 1963 to September 1, 1967. Taschereau had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Cartwright Court
The Cartwright Court era, under the leadership of John Robert Cartwright, lasted from September 1, 1967 to March 23, 1970. Cartwright had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Fauteux Court
The Fauteux Court era, under the leadership of Gérald Fauteux, lasted from March 23, 1970 to December 23, 1973. Fauteux had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Laskin Court
The Laskin Court era, under the leadership of Bora Laskin, lasted from December 27, 1973 to March 26, 1984. Laskin had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Dickson Court
The Dickson Court era, under the leadership of Brian Dickson, lasted from April 18, 1984 to June 30, 1990. Dickson had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

Lamer Court
The Lamer Court era, under the leadership of Antonio Lamer, lasted from July 1, 1990 to January 6, 2000. Lamer had been a puisne Supreme Court justice for at the time of his elevation to chief justice.

McLachlin Court
The McLachlin Court era, under the leadership of Beverley McLachlin, lasted from January 7, 2000 to December 15, 2017. McLachlin had been a puisne Supreme Court justice for at the time of her elevation to chief justice. She is both the first woman to hold that position and the longest serving chief justice in Canadian history.

Wagner Court
The Wagner Court era, under the leadership of Richard Wagner, began December 18, 2017 and is ongoing. Wagner had been a puisne Supreme Court justice for at the time of his elevation to chief justice.