| Judy Maddigan | |
| Term Start: | 25 February 2003 |
| Term End: | 20 December 2006 |
| Assembly1: | Victorian Legislative |
| Term Start1: | 30 March 1996 |
| Term End1: | 26 November 2010 |
| Birth Name: | Judith Marilyn Todd |
| Birth Date: | 1948 2, df=yes |
| Birth Place: | Melbourne, Victoria, Australia |
| Nationality: | Australian |
| Occupation: | Librarian |
Judith Marilyn Maddigan (; born 3 February 1948), Australian politician, was Speaker of the Victorian Legislative Assembly from 2003 to 2005. She was the member for the seat of Essendon from 1996 to 2010, representing the Labor Party.
Maddigan was born in Melbourne, and was educated at Tintern Grammar and the University of Melbourne. She was a librarian before entering politics. She was the first woman Speaker of the Legislative Assembly.[1]