Fahmida Mirza, 52, won the top post with 249 votes from the 342-seat lower house of parliament, or national assembly, outgoing speaker Amir Hussain said.
"Fahmida Mirza is declared to have been elected as the speaker of the national assembly," Hussain said as MPs pounded their desks in approval and congratulated the purple-veiled former medical doctor.
Mirza, a veteran politician from Bhutto's home province of Sindh, is the first female speaker in the 60-year history of the Islamic nation of 160 million people.
"This is my third tenure in the national assembly and I believe it is time that we all work together to address the challenges facing the country," Mirza told reporters before the session.
"I am sure that we will be able to face these challenges with the support of parliamentarians, our people and Pakistani media."
"The election of Fahmida Mirza as speaker will be a big step towards the empowerment of women in Pakistan," Shah Mahmood Qureshi, a central PPP leader, told reporters.
The party supporting key US ally President Pervez Musharraf, which suffered a crushing defeat in the elections last month, has also put forth a candidate for the speaker's post.
The speaker conducts the business of the house, deciding which debates or motions are allowed and will play a key role in a parliament that looks set for a major showdown with Musharraf.
Güncelleme Tarihi: 19 Mart 2008, 16:08