Lawrence Tupper Lydick (June 22, 1916 – December 17, 1995) was a United States federal judge.
Born in San Diego, California, Lydick received an A.B. from Stanford University in 1938 and a J.D. from Stanford Law School in 1942. He was an Acting director, Disputes Division, Tenth Region, U.S. War Labor Board from 1942 to 1943. He was a U.S. Naval Reserve Lieutenant from 1943 to 1946. He was an Assistant to president/general counsel, U.S. Grant Export-Import, Ltd., Los Angeles, California from 1946 to 1948. He was in private practice in Los Angeles, California from 1948 to 1971.
Lydick was a federal judge on the United States District Court for the Central District of California. Lydick was nominated by President Richard Nixon on July 8, 1971, to a seat vacated by Thurmond Clarke. He was confirmed by the United States Senate on July 29, 1971, and received his commission the same day. He assumed senior status on March 1, 1984. Lydick served in that capacity until December 17, 1995, due to his death.
He died in Laguna Beach, California.