| Louis Rosenberg | |
| Office: | Senior Judge of the United States District Court for the Western District of Pennsylvania |
| Term Start: | January 5, 1976 |
| Term End: | July 2, 1999 |
| Office1: | Judge of the United States District Court for the Western District of Pennsylvania |
| Term Start1: | November 20, 1961 |
| Term End1: | January 5, 1976 |
| Appointer1: | John F. Kennedy |
| Predecessor1: | Seat established by 75 Stat. 80 |
| Successor1: | Maurice B. Cohill Jr. |
| Birth Name: | Louis Rosenberg |
| Birth Date: | 5 July 1898 |
| Birth Place: | Beaver Falls, Pennsylvania |
| Death Place: | Highland Park, Pennsylvania |
| Education: | Duquesne University School of Law (LL.B.) |
Louis Rosenberg (July 5, 1898 – July 2, 1999) was a United States district judge of the United States District Court for the Western District of Pennsylvania.
Born in Beaver Falls, Pennsylvania, Rosenberg received a Bachelor of Laws from Duquesne University School of Law in 1923. He was special counsel for Allegheny County Emergency Relief in 1935. He was special deputy attorney general of the Commonwealth of Pennsylvania from 1936 to 1939. He was special counsel for the Commonwealth of Pennsylvania from 1939 to 1941. He was special assistant city solicitor for the City of Pittsburgh from 1941 to 1956. He was Director of Public Safety for Pittsburgh from 1956 to 1961.
Rosenberg received a recess appointment from President John F. Kennedy on November 20, 1961, to the United States District Court for the Western District of Pennsylvania, to a new seat created by 75 Stat. 80. He was nominated to the same seat by President Kennedy on January 15, 1962. He was confirmed by the United States Senate on July 10, 1962, and received his commission on July 12, 1962. He assumed senior status on January 5, 1976. His service was terminated on July 2, 1999, due to his death in Highland Park, Pennsylvania, three days before his 101st birthday.