Rein Lang is an Estonian politician, a member of the Estonian Reform Party since 1995, and a diplomat. He was the Minister of Culture in Andrus Ansip's third cabinet until his resignation.

The Andrus Ansip's third cabinet was the Cabinet of Estonia between 6 April 2011 and 26 March 2014. It was a coalition cabinet of the free market liberal Estonian Reform Party and conservative Union of Pro Patria and Res Publica.