| Honorific-Prefix: | The Honourable |
| Ron Cornish | |
| Order: | 27th |
| Office: | Speaker of the Tasmanian House of Assembly |
| Term Start: | 12 March 1986 |
| Term End: | 1 November 1988 |
| Predecessor: | Max Bushby |
| Successor: | Tony Rundle |
| Constituency Am1: | Braddon |
| Assembly1: | Tasmanian House of |
| Term Start1: | 11 December 1976 |
| Term End1: | 29 August 1998 |
| Birth Date: | 1944 3, df=yes |
| Birth Place: | Burnie, Tasmania, Australia |
| Nationality: | Australian |
| Party: | Liberal |
Ronald Cornish (born 21 March 1944) is a former Australian politician. He was born in Burnie, Tasmania. In 1976, he was elected to the Tasmanian House of Assembly representing Braddon for the Liberal Party. He served as Speaker of the House from 1986 to 1988 and was a minister from 1988 to 1989 and 1992 to 1998, when he retired.[1]