Mah Bow Tan is a Singaporean former politician who served as Leader of the House between 2007 and 2011, Minister for National Development between 1999 and 2011, Minister for the Environment between 1993 and 1995, and Minister for Communications between 1991 and 1999. A former member of the governing People's Action Party (PAP), he was the Member of Parliament (MP) representing the Tampines East ward of Tampines GRC between 1988 and 2015.

The leader of the House is a position responsible for arranging government business in the Parliament of Singapore. The leader of the House initiate motions concerning the business of the House during parliamentary sittings, such as actions to be taken on procedural matters and extending sitting times.