Kronstadt, John A., 1951-

John Arnold Kronstadt (born March 5, 1951) is a United States District Judge of the United States District Court for the Central District of California.

Kronstadt was born in 1951. He graduated from Cornell University in 1973 with an Artium Baccalaureus At Cornell, he was a member of the Quill and Dagger society. He earned his Juris Doctor from Yale Law School in 1976. After completing law school, Kronstadt served as a law clerk for Judge William P. Gray of the United States District Court for the Central District of California.

In October 2002, California Governor Gray Davis appointed Kronstadt to the Los Angeles County Superior Court. He replaced Judge Juelann Cathey, who had retired earlier that year following major heart surgery.

On November 17, 2010, President Barack Obama nominated Kronstadt to a judgeship on the United States District Court for the Central District of California to fill the vacancy created by the death of Florence-Marie Cooper. On April 12, 2011, the Senate voted 96–0 to confirm his nomination. Kronstadt received his judicial commission two days later.