The Minority Leader (Khmer: ប្រធានក្រុមភាគតិច), or the Leader of the Opposition, leads the largest political party not in government in the National Assembly of Cambodia.

The official minority party must secure at least 25% of the total seats in Parliament.

The role was officially recognized by Parliament in November 2014,[4] making Sam Rainsy the first official Minority Leader.

[1] However, prior to this, Rainsy had often been viewed as the de facto Leader of the Opposition.

As in nearly every parliamentary democracy around the world, the Minority Leader comes from the political party with the largest number of seats in the Parliament yet is not in government.