The Ad Hoc Committee on Strengthening OSCE Engagement Through Transparency and Reform, formerly known as the Ad Hoc Committee on Transparency and Reform of the OSCE, was established in 2001 as the Ad Hoc Committee on Transparency and Accountability.

The Committee is made up of senior members of the Assembly and works to strengthen interaction between parliamentarians and governments to encourage more transparency within the OSCE and reforms to make the Organization operate more effectively and efficiently.