| Fred S. LeBlanc | |
| Nationality: | American |
| Office: | Louisiana Attorney General |
| Term Start: | 1944 |
| Term End: | 1948 |
| Governor: | Jimmie Davis |
| Preceded: | Eugene Stanley |
| Succeeded: | Bolivar Edwards Kemp, Jr. |
| Term Start2: | May 1952 |
| Term End2: | May 1956 |
| Governor2: | Robert F. Kennon |
| Preceded2: | Bolivar Edwards Kemp, Jr. |
| Succeeded2: | Jack P. F. Gremillion |
| Office3: | Mayor of Baton Rouge, Louisiana |
| Term Start3: | 1941 |
| Term End3: | 1944 |
| Preceded3: | W. H. Bynum |
| Succeeded3: | Powers Higginbotham |
| Office4: | Judge of the Louisiana 19th Judicial District court |
| Term Start4: | April 11, 1958 |
| Term End4: | June 11, 1969 |
| Succeeded4: | John S. Covington |
| Birth Date: | 24 July 1897 |
| Birth Place: | near Baton Rouge, Louisiana |
| Death Place: | Baton Rouge, Louisiana |
| Occupation: | Attorney |
| Alma Mater: | Louisiana State University Law Center |
Frederick Saugrain LeBlanc Sr. (July 24, 1897 - June 11, 1969),[1] [2] was an American politician in the US state of Louisiana who was Louisiana attorney general from 1944 to 1948 and from 1952 to 1956. He was a member of the Democratic Party.[3]