John J. Tuchi

Tuchi was one of the judges which presided over Kari Lake's challenge of the Arizona gubernatorial election results during the 2022 Midterm elections. Tuchi ruled on December 1, 2022, that Lake's claims that proper election procedures weren't followed, citing insufficient evidence. Attorneys for Lake and GOP Arizona Secretary of State nominee Mark Finchem, but not the candidates themselves, were ordered to pay the county's reasonable attorney's fees, the amount of which is to be determined at a later date.

On September 19, 2013, President Barack Obama nominated Tuchi to serve as a United States District Judge of the United States District Court for the District of Arizona, to the seat vacated by Judge Roslyn O. Silver, who assumed senior status on September 3, 2013. Tuchi was one of four Arizona judicial nominees announced by Obama that day who were chosen in consultation with Republican Senators John McCain and Jeff Flake. On February 27, 2014 his nomination was reported out of the committee. On May 12, 2014 Senate Majority Leader Harry Reid filed for cloture on the nomination. On Wednesday May 14, 2014 the Senate invoked cloture on his nomination by a 62–35 vote. Later that day the Senate confirmed him by a 96–0 vote. He received his judicial commission on May 16, 2014.

From 1998 to 2014, Tuchi was an assistant U.S. attorney for the District of Arizona. He served as Chief of the Criminal Division, from 2006 to 2009, as Senior Litigation Counsel and Tribal Liaison from 2009 to 2012, interim United States Attorney in 2012 and later served as Chief Assistant United States Attorney.

Tuchi served as a law clerk to Judge William C. Canby of the U.S. Court of Appeals for the Ninth Circuit from 1994 to 1995. He was in private practice as an associate at the law firm of Brown & Bain (now part of Perkins Coie) from 1995 to 1998.

Tuchi was a project engineer at the Hughes Aircraft Company from 1987 to 1989, then worked as a consultant for Arthur Andersen from 1989 to 1991. He then attended Arizona State University's College of Law (now Sandra Day O'Connor College of Law), where he was editor-in-chief of the Arizona State Law Journal. He graduated in 1994 with a Juris Doctor magna cum laude and Order of the Coif membership.

John Joseph Tuchi (born May 18, 1964) is an American lawyer and jurist who is a U.S. district judge of the U.S. District Court for the District of Arizona.

Tuchi was born in 1964 in Colver, Pennsylvania. He studied engineering at West Virginia University, graduating in 1987 with a Bachelor of Science degree. He received a Master of Science degree from the University of Arizona in 1989.