The Williams Medal is presented to the player deemed Best on Ground in a Women's Premier League Grand Final. The medal was named the Coca Cola Medal from 2004/05 until 2014/15 when it was re-named the Williams Medal.
| Year | Name | Club |
|---|---|---|
| Coca Cola Medal | ||
| 2004/05 | Toni Alexandrow | St Mary's |
| 2005/06 | Natalie Forster | St Mary's |
| 2006/07 | Ebony Miller | Darwin Buffaloes |
| 2007/08 | Hannah Bowley | St Mary's |
| 2008/09 | Sandra Eaton | St Mary's |
| 2009/10 | Jamie Lee Puautjimi | St Mary's |
| 2010/11 | Nicole Simons | Palmerston Magpies |
| 2011/12 | Colleen Gwynne | Waratah |
| 2012/13 | Lisa Roberts | Waratah |
| 2013/14 | Angela Foley | Waratah |
| Williams Medal | ||
| 2014/15 | Angela Foley | Waratah |
| 2015/16 | Abbey Holmes | Waratah |
| 2016/17 | Jessica Cunningham | Darwin Buffaloes |
| 2017/18 | Madeline Gault | Waratah |
| 2018/19 | Lisa Roberts | Waratah |
| 2019/20 | Grace Mulvahil | Southern Districts |
| 2020/21 | Jasmyn Hewett | PINT |
|
2021/22 2022/23 2023/24 |
Dominique Carbone Jasmyn Hewett Jasmyn Hewett
|
Darwin Buffettes PINT PINT |