| Edgar R. Kiess | |
| Image Name: | EdgarRaymondKiess.jpg |
| State1: | Pennsylvania |
| District1: | 16th |
| Term Start1: | March 4, 1923 |
| Term End1: | July 20, 1930 |
| Preceded1: | Isaac Clinton Kline |
| Succeeded1: | Robert F. Rich |
| State2: | Pennsylvania |
| District2: | 15th |
| Term Start2: | March 4, 1913 |
| Term End2: | March 3, 1923 |
| Preceded2: | William Bauchop Wilson |
| Succeeded2: | Louis Thomas McFadden |
| Office3: | Member of the Pennsylvania House of Representatives |
| Term3: | 1904–1910 |
| Birth Date: | 26 August 1875 |
| Birth Place: | Warrensville, Pennsylvania, US |
| Death Place: | Eagles Mere, Pennsylvania, US |
| Party: | Republican |
Edgar Raymond Kiess (August 26, 1875 – July 20, 1930) was a Republican member of the U.S. House of Representatives from Pennsylvania.
Kiess was born in Warrensville, Pennsylvania. He graduated from the Lycoming County Normal School in Muncy, Pennsylvania, in 1892. He taught in the public schools of Lycoming County for two years. He became engaged in the newspaper publishing business in Hughesville, Pennsylvania, in 1894. He served as a member of the Pennsylvania State House of Representatives from 1904 to 1910. He was engaged in business in Williamsport, Pennsylvania, in 1910, and served as a trustee of Pennsylvania State College from 1912 to 1930.
Kiess was elected as a Republican to the Sixty-third and to the eight succeeding Congresses and served until his death at his summer home at Eagles Mere, Pennsylvania in 1930. He served as chairman of the House Committee on Insular Affairs, which had jurisdiction over United States territories such as Puerto Rico and the Philippines, during the Sixty-ninth through Seventy-first Congresses. Interment was at Wildwood Cemetery in Williamsport.