Collins J. Seitz Jr. (born September 14, 1957)^[1] is the chief justice of the Delaware Supreme Court.^[2]

Seitz received a Bachelor of Arts from the University of Delaware in 1980. He earned his J.D. degree at the Villanova University School of Law and was admitted to the Delaware Bar in 1983.^[3]

Seitz served as managing partner of Connolly Bove Lodge & Hutz LLP, where he practiced for more than three decades. He was the founding partner of Seitz, Ross, Aronstam & Moritz LLP. In that capacity, he regularly litigated corporate, commercial, and intellectual property cases, and advised clients on issues of Delaware corporate law.^[3]

Seitz's sister is Virginia A. Seitz, an attorney who served as United States Assistant Attorney General for the Office of Legal Counsel from 2011 to 2013. His father is Collins J. Seitz, who served as a Judge on the United States Court of Appeals for the Third Circuit until his death in 1998.^{[citation needed]}