| Ivo Cassol | |
| Office: | Senator from Rondônia |
| Term Start: | February 1, 2011 |
| Office2: | Governor of Rondônia |
| Term Start2: | January 1, 2003 |
| Term End2: | March 31, 2010 |
| Birth Date: | 20 January 1959 |
| Birth Place: | Concórdia, Santa Catarina |
| Party: | Progressive Party |
Ivo Cassol (born January 20, 1959) is a Brazilian politician. He has represented Rondônia in the Federal Senate since 2011. Previously, he was Governor of Rondônia from 2004 to 2010, when he resigned to seek election to the Senate. He is a member of the Progressive Party.[1]