The women's 20 kilometre walk at the 2012 African Championships in Athletics was held at the Stade Charles de Gaulle on 29 June.
| Gold | Grace Wanjiru | |
| Silver | Olfa Lafi | |
| Bronze | Aynalem Eshetu |
| Standing records prior to the 2012 African Championships in Athletics | |||||
|---|---|---|---|---|---|
| World record | 1:25:08 | Sochi, Russia | 26 February 2011 | ||
| African record | 1:34:19 | Nairobi, Kenya | 1 August 2010 | ||
| Championship record | 1:34:19 | Nairobi, Kenya | 1 August 2010 | ||
| Rank | Name | Nationality | Time | Note | |
|---|---|---|---|---|---|
| 1:40:53 | |||||
| 1:46:17 | |||||
| 1:49:45 | |||||
| 1:56:01 | |||||
| 2:04:45 | |||||
| DNF |