David James Porter (born March 8, 1966) is a United States circuit judge of the United States Court of Appeals for the Third Circuit.

Porter was born on March 8, 1966, in Kittanning, Pennsylvania.^[1] He earned his Bachelor of Arts from Grove City College in 1988 and his Juris Doctor from the George Mason University School of Law (now Antonin Scalia Law School) in 1992, where he served as an articles editor of the George Mason Law Review.^[2]

After graduating from law school, Porter served as a law clerk to Judge D. Brooks Smith of the U.S. District Court for the Western District of Pennsylvania from 1992 to 1994. He then joined the law firm Buchanan, Ingersoll & Rooney in Pittsburgh, where practiced in the fields of regulatory law, Constitutional law, and commercial litigation.^[2][3]

From 1989 to 1992 he was a member of the Federalist Society; he rejoined in 1995 and has since been President of the Pittsburgh chapter.^[4]

In 2014 David J. Porter's name was discussed to be included to the White House as part of a package of judicial nominees between senators Bob Casey (D) and Pat Toomey (R).^[5] This was due to a tradition in Pennsylvania that divides judicial nominations on a 3-to-1 ratio when the state's two US senators are of the opposite party. This would allow The White House appointing one judge of the opposing party for three of their own party. Progressives in Pennsylvania scrambled to derail the deal because of David Porter's opposition to abortion, gay marriage and gun control.^[6] As a result, his name was removed as part of a deal that would have resulted in him being nominated to the U.S. District Court for the Western District of Pennsylvania.

On April 10, 2018, President Donald Trump announced his intent to nominate Porter to serve as a United States Circuit Judge of the United States Court of Appeals for the Third Circuit. Senator Bob Casey Jr. immediately indicated his opposition to Porter's nomination, while Senator Pat Toomey voiced his support.^[7][8] On April 12, 2018, his nomination was sent to the Senate. He was nominated to the seat vacated by Judge D. Michael Fisher, who assumed senior status on February 1, 2017.^[9] On June 6, 2018, a hearing on his nomination was held before the Senate Judiciary Committee.^[10] On July 19, 2018, his nomination was reported out of committee by an 11–10 vote.^[11] On October 11, 2018, his nomination was confirmed by a 50–45 vote.^[12] He received his judicial commission on October 15, 2018.^[13]