Abu Bakr Mustaffa Baira (Arabic: أبوبكر مصطفى بعيرة) (born July 21, 1941) is a Libyan politician who was the Acting President of the House of Representatives (also known as the Libyan House of Representatives-HoR Arabic: مجلس النواب) of Libya, a role he held as the oldest member of Libya's legislature until Aguila Saleh Issa was appointed permanent chair.

Baira has been Chairman of the Management Department in the Faculty of Economics and Commerce at the University of Benghazi (Garyonis) from 1975 to 1982.

He also served in a number of board memberships in different Libyan major organizations.

From 1984 to 1985, Buera was dean for Academic Affairs, Faculty of Economics and Commerce at the Garyonis University.

Baira served as MP (elected) in the Libyan House of Representatives-HoR, from August 2014.