| Horace Weldon Gilmore | |
| Office: | Senior Judge of the United States District Court for the Eastern District of Michigan |
| Term Start: | May 1, 1991 |
| Term End: | January 25, 2010 |
| Office1: | Judge of the United States District Court for the Eastern District of Michigan |
| Term Start1: | June 18, 1980 |
| Term End1: | May 1, 1991 |
| Appointer1: | Jimmy Carter |
| Predecessor1: | Cornelia Groefsema Kennedy |
| Successor1: | John Corbett O'Meara |
| Birth Name: | Horace Weldon Gilmore |
| Birth Date: | 4 April 1918 |
| Birth Place: | Columbus, Ohio |
| Death Place: | Grosse Pointe, Michigan |
| Education: | University of Michigan (BA) University of Michigan Law School (JD) |
Horace Weldon Gilmore (April 4, 1918 – January 25, 2010) was a United States district judge of the United States District Court for the Eastern District of Michigan.
Born in Columbus, Ohio, Gilmore received a Bachelor of Arts degree from the University of Michigan in 1939 and a Juris Doctor from the University of Michigan Law School in 1942. He was a lieutenant in the United States Naval Reserve during World War II, from 1942 to 1946. He was a law clerk to Judge Charles Casper Simons of the United States Court of Appeals for the Sixth Circuit from 1946 to 1947, and was then in private practice in Detroit, Michigan from 1947 to 1951. He was a special Assistant United States Attorney for the Eastern District of Michigan from 1951 to 1952, returning to private practice from 1953 to 1954. He was a member of the Michigan Board of Tax Appeals in 1954, and a deputy state attorney general of Michigan from 1954 to 1956. He was a judge on the 3rd Judicial Circuit in Detroit from 1956 to 1980.
On May 22, 1980, Gilmore was nominated by President Jimmy Carter to a seat on the United States District Court for the Eastern District of Michigan vacated by Judge Cornelia Groefsema Kennedy. He was confirmed by the United States Senate on June 18, 1980, and received his commission the same day. He assumed senior status on May 1, 1991, serving in that status until his death on January 25, 2010, in Grosse Point, Michigan.