Alvin Benjamin Rubin (March 13, 1920 – June 11, 1991) was a United States federal judge.
Born in Alexandria, Louisiana, Rubin received a B.S. from Louisiana State University in 1941 and an LL.B. from Louisiana State University Law School in 1942. He was in private practice in Louisiana from 1946 to 1966.
On August 16, 1966, Rubin was nominated by President Lyndon B. Johnson to a new seat on the United States District Court for the Eastern District of Louisiana created by 80 Stat. 75. He was confirmed by the United States Senate on October 20, 1966, and received his commission on November 3, 1966. Rubin served in that capacity until October 8, 1977, due to appointment to another judicial position.
On August 16, 1977, President Jimmy Carter nominated Rubin to a seat on the United States Court of Appeals for the Fifth Circuit vacated by John Minor Wisdom. Rubin's elevation was confirmed by the United States Senate on September 16, 1977, and he received his commission on September 19, 1977. He assumed senior status on July 1, 1989. Rubin serving in that capacity until his death, in Baton Rouge, Louisiana.