| J. Scott Wolff | |
| Office1: | Member of the 68th United States Congress |
| Term1: | March 4, 1923 - March 3, 1925 |
| Office2: | Member of the Missouri House of Representatives |
| Term2: | 1913-1915 |
| Office3: | Mayor of Festus, Missouri |
| Term3: | 1907-1911 1915-1917 |
| Party: | Democratic Party |
| Birth Date: | 14 June 1878 |
| Birth Place: | Westmoreland County, Pennsylvania, USA |
| Death Place: | Kansas City, Missouri, USA |
| Education: | Washington University in St. Louis |
Joseph Scott Wolff (June 14, 1878 – February 27, 1958) was a U.S. Representative from Missouri.
Wolff was born on a farm in Westmoreland County near Greensburg, Pennsylvania. He served with the 4th Cavalry Regiment in the Philippines during the Spanish–American War. He moved to St. Louis, Missouri in 1901, graduating from Washington University School of Dental Medicine in 1905. He practiced dentistry in St. Louis and Festus. He served as the mayor of Festus from 1907 to 1911 and again from 1915 to 1917.
He was elected to the Missouri House of Representatives in 1913 and served for two years. In 1923, he graduated from the St. Louis College of Law and Finance and was subsequently admitted to the bar. He served on the 68th United States Congress from 1923 to 1925, losing his 1924 reelection campaign. He moved to Kansas City in 1924, where he practiced both dentistry and law until retiring in 1957. He died the following year on February 27 and is interred at Gambel Cemetery in Festus.