Robert Howard Schnacke (October 8, 1913 – June 5, 1994) was a United States federal judge.
Born in San Francisco, California, Schnacke received a J.D. from the University of California, Hastings College of Law in 1938. He was in private practice in San Francisco, California from 1938 to 1942. He was in the United States Army, special agent, Counter Intelligence Corps from 1942 to 1946. He was in private practice in San Francisco, California in 1946. He was a Deputy commissioner, Division of Corporations, State of California from 1947 to 1951. He was in private practice in San Francisco, California from 1951 to 1953. He was an Assistant U.S. attorney / chief of criminal division, Northern District of California from 1953 to 1958. He was the United States Attorney for the Northern District of California from 1958 to 1959. He was in private practice in San Francisco, California from 1959 to 1968. He was a judge on the Superior Court of California from 1968 to 1970.
Schnacke was a federal judge on the United States District Court for the Northern District of California. Schnacke was nominated by President Richard Nixon on September 10, 1970, to a seat vacated by George B. Harris. He was confirmed by the United States Senate on October 13, 1970, and received his commission on October 15, 1970. He assumed senior status on December 31, 1983. Schnacke served in that capacity until June 5, 1994, due to his death.