On Thursday, an investigating judge charged Sylvia Bongo Ondimba Valentin, according to Andre Patrick Roponat, who made the announcement on state TV.
Since the coup in the oil-rich country's capital of Libreville on August 30, she has been under House Arrest there.
Roponat stated that her house arrest order had also been enforced.
This month, one of her attorneys claimed that she was being held "incommunicado outside of any legal framework."
Their son Noureddin Bongo Valentin, along with a number of former cabinet members and two ex-ministers, has previously been charged with corruption and embezzling state monies.Moments after being declared the winner of a presidential election, military leaders deposed Bongo, 64, who had ruled the country of central Africa since 2009.
The opposition and the organizers of the military coup have also accused his rule of extensive corruption and poor leadership, and they have called the results a fraud.
After nearly 42 years in power, Ali Bongo took over when his father Omar passed away in 2009.
