| Robert D. Heaton | |
| Birthname: | Robert Douglas Heston |
| Image Name: | Robert D. Heaton (Pennsylvania Congressman).jpg |
| Caption: | Harris & Ewing Collection, Library of Congress. |
| State1: | Pennsylvania |
| District1: | 12th |
| Term Start1: | March 4, 1915 |
| Term End1: | March 3, 1919 |
| Preceded1: | Robert Emmett Lee |
| Succeeded1: | John Reber |
| Office2: | Member of the Pennsylvania Senate |
| Term Start2: | 1919 |
| Term End2: | 1932 |
| Preceded2: | Charles A. Snyder |
| Succeeded2: | Charles W. Staudenmeier |
| Birth Date: | 1 July 1873 |
| Birth Place: | Raven Run, Pennsylvania, U.S. |
| Death Place: | Ashland, Pennsylvania, U.S. |
| Resting Place: | Jim Thorpe, Pennsylvania |
| Party: | Republican |
Robert Douglas Heaton (July 1, 1873 – June 11, 1933) was 20th Century American businessman and politician who served two terms as a Republican member of the U.S. House of Representatives from Pennsylvania from 1915 to 1919.
Robert D. Heaton was born in Raven Run, Pennsylvania. He moved to Ashland, Pennsylvania, with his parents in 1886. He attended the Canandaigua Academy in Canandaigua, New York, the New York Military Academy at Cornwall, New York, and the University of Pennsylvania at Philadelphia. He is identified with many business enterprises of the State and county.
Heaton was an unsuccessful candidate for election in 1910, and was elected as a Republican to the Sixty-fourth and Sixty-fifth Congresses. He did not seek renomination in 1918, having become a candidate for the Pennsylvania State Senate.
He was a member of the State Senate from 1919 to 1932. He resumed his former business activities, and served as a member of the board of trustees of the Ashland State Hospital.
He died in Ashland, Pennsylvania, aged 59, and is interred in the family cemetery in Jim Thorpe, Pennsylvania.