| Meg Burton Cahill | |
| State Senate: | Arizona |
| District: | 17th |
| Term Start: | January 2007 |
| Term End: | January 2011 |
| State House1: | Arizona |
| District1: | 17th |
| Term Start1: | January 2000 |
| Term End1: | January 2007 |
| Party: | Democratic |
| Birth Date: | 8 March 1954 |
| Birth Place: | Salem, New Jersey |
| Occupation: | Ceramic artist |
| Spouse: | Dennis |
| Residence: | Tempe, Arizona |
Margaret J. Burton Cahill (born March 8, 1954) is an American Democratic politician. She has served as Arizona State Senator for District 17 until 2011. Earlier she was a member of the Arizona House of Representatives from 2000 through 2006.
Cahill is currently running for Justice of the Peace in the University Lakes Justice Precinct.