Katherine Jane Wilson, 60, is "safe and well" according to a statement issued by Foreign Minister Julie Bishop, EFE news reported.
Wilson was working for helping Afghan women in the city of Jalalabad when she was kidnapped by a group of armed men claiming to be officials.
No armed group claimed responsibility for the abduction, prompting local authorities to call it a kidnapping for ransom.
The Australian minister did not comment on the conditions of the aid worker's release in order to protect those who continue to be held hostage or are at risk of being kidnapped in Afghanistan.
Bishop also thanked Afghan authorities as well as Australian diplomat, and said the government will continue to provide assistance to Wilson and her family.
