Keith Giblin is a United States Magistrate Judge for the Eastern District of Texas. He originally took his oath of office on October 1, 2004 and was re-appointed for this third term on October 1, 2020. Giblin is a Beaumont native who attended French High School and worked shift work at the Goodyear Chemical Plant while attending Lamar University part-time. He earned his Bachelor of Science in Physics in 1986 and his jurisprudence degree from South Texas College of Law in 1989.

After graduation from law school, Giblin was appointed as an assistant U.S. attorney for the Eastern District of Texas, investigating and prosecuting hundreds of federal criminal cases involving a wide range of matters. He has extensive trial experience, has argued numerous cases before the Fifth Circuit Court of Appeals, served as attorney-in-charge of the Beaumont Division of the U.S. Attorney's Office and taught trial advocacy at the Department of Justice's National Advocacy Center in Columbia, South Carolina. While serving on the bench, Giblin attended the University of Houston Law Center and received his Master of Law degree in intellectual property law in May 2010.

Giblin is in adjunct instructor of criminal law at LU, and is also an ordained Episcopal priest and volunteers as an unpaid priest serving smaller churches in the area. He has also taught religion at All Saints' Episcopal School.