| Dennis Avery | |
| State House: | Indiana |
| State: | Indiana |
| District: | 75th |
| Term Start: | November 3, 1982 |
| Term End: | November 3, 2010 |
| Preceded: | Vaneta Becker |
| Succeeded: | Ronald Bacon |
| State House1: | Indiana |
| State1: | Indiana |
| District1: | 72nd |
| Term Start1: | November 6, 1974 |
| Term End1: | November 3, 1982 |
| Preceded1: | Robert Lee Rickard Jr |
| Succeeded1: | William Cochran |
| Party: | Democratic |
| Birth Name: | Dennis Theodore Avery |
| Birth Date: | 28 September 1946 |
| Birth Place: | Evansville, Indiana, U.S. |
| Alma Mater: | University of Evansville |
| Occupation: | University of Southern Indiana Adult Marketing Coordinator |
| Spouse: | Patty |
| Residence: | Evansville, Indiana |
Dennis Theodore Avery (born September 28, 1946) is an American retired politician who was a Democratic member of the Indiana House of Representatives, representing the 75th District from 1974 until 2010.[1] He did not seek reelection in 2010.[2]