| Arthur William "Art" Sour, Jr. | |
| Office: | Louisiana State Representative for District 6 (Shreveport) |
| Term Start: | 1972 |
| Term End: | 1992 |
| Preceded: | Frank Fulco |
| Successor: | Melissa Flournoy |
| Birth Date: | 6 November 1924 |
| Birth Place: | Shreveport, Louisiana, US |
| Resting Place: | Forest Park East Cemetery in Shreveport |
| Spouse: | Mary Margaret Hodge Sour |
| Children: | 3 |
| Alma Mater: | C. E. Byrd High School |
| Party: | Republican |
| Branch: | United States Army |
| Battles: | World War II |
Arthur William Sour, Jr., known as Art Sour (November 6, 1924 - January 10, 2000), was a petroleum and real estate businessman, who was a pioneer in the development of a competitive Republican Party in his native U.S. state of Louisiana.
One of Sour's sisters, Louise Pasquier, the widow of Charles F. Pasquier, Sr., was among the founders of St. Joseph Catholic Church in Shreveport.[1]