2005 term opinions of the Supreme Court of the United States

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The 2005 term of the Supreme Court of the United States began October 3, 2005, and concluded October 1, 2006. The table illustrates which opinion was filed by each justice in each case and which justices joined each opinion.

Table key

	Delivered the Court's opinion		Joined the Court's opinion		Filed a concurrence		Joined a concurrence
	Filed a dissent		Joined a dissent		Filed a concurrence/dissent		Joined a concurrence/dissent
	Did not participate in the decision
Decisions that do not note an argument date were decided without oral argument. Decisions that do not note a Justice delivering the Court's opinion are per curiam. Multiple concurrences and dissents within a case are numbered, with joining votes numbered accordingly. Justices frequently join multiple opinions in a single case; each vote is subdivided accordingly. An asterisk ( * ) in the Court's opinion denotes that it was only a majority in part or a plurality. An asterisk in a joining vote denotes that the justice joined it only in part. A dash ( - ) denotes that the Justice voted without filing or joining an opinion.

2005 term membership and statistics

This was the first term of Chief Justice Roberts, who was confirmed following the death of Chief Justice William Rehnquist on September 3. Justice O'Connor also retired midterm on January 31, 2006, when she was replaced by Justice Alito. The Court's membership had not changed for the previous eleven terms.