If u mean U.S. then as long as they want. But they can retire or be asked to leave
10 years chief justice is elected by the court from its members for a three-year term
8 years
john marshall was the supreme court chief justice for 34 not 35.
As of 2011, Senior Justice Antonin Scalia has served the longest tenure of the current justices. President Reagan appointed Scalia to the Court on September 26, 1986; as of that date in 2012, he will have been on the Supreme Court bench for 26 years.
Justice William O. Douglas was 41 years old when President Roosevelt appointed him to the US Supreme Court in April 1939. Douglas served the longest tenure of any other justice in the Court's history, 36 years, 209 days, and was just one month past his 77th birthday when he retired.
President Ronald Reagan nominated senior Justice Antonin Scalia to the US Supreme Court in 1986. Justice Scalia will have served 25 years on September 26, 2011.
John Jay was the first Chief Justice of the United States Supreme Court, and he served for almost 6 years, from Sept. 26, 1789 - June 29, 1795.
Thurgood Marshall was the first ever African-American man to serve as a Justice for the Supreme Court. He served from October 1967 until October 1991.
No. Justice William O. Douglas served more than 36 years on the US Supreme Court, and has the distinction of being the longest-serving justice. John Marshall was the longest-serving Chief Justice, marking more than 34 years on the bench (1801-1835).
When Justice Stevens retired on June 29, 2010, he had been a member of the US Supreme Court for 34 years, 6 months, 10 days, the third longest tenure in the Court's history (behind Stephen J. Field, who served one day longer than Stevens, and William O. Douglas, who served more than 36 years).Born April 20, 1920, the 90-year-old Justice John Paul Stevens was the Senior Associate Justice on the Court, and had served under three Chief Justices (Warren E. Burger, William H. Rehnquist, and John G. Roberts).
Anthony M. Kennedy has served for the US. Supreme Court for about 23 years.
No, Justice David Souter served on the US Supreme Court from October 1990 until his retirement in 2009, a little less than 19 years. Souter was nowhere close to Justice William O. Douglas' record, which was 36 years, 209 days.