Kilmarnock and Loudoun (Scottish Parliament constituency)

Kilmarnock and Loudoun was a constituency of the Scottish Parliament. It elected one Member of the Scottish Parliament (MSP) by the First past the post method of election. Under the additional-member electoral system used for elections to the Scottish Parliament, it was also one of ten constituencies in the Central Scotland electoral region, which elected seven additional members, in addition to ten constituency MSPs, to produce a form of proportional representation for the region as a whole.

The constituency was abolished ahead of the 2011 Scottish Parliament election, with the area covered being split largely forming the new seat of Kilmarnock and Irvine Valley.