There have been several elective constituencies called Ayrshire:
- Ayrshire (Parliament of Scotland constituency); 1605-1707
- Ayrshire (UK Parliament constituency); 1708-1868
- South Ayrshire (UK Parliament constituency); 1868-1983
- North Ayrshire (UK Parliament constituency); 1868-1918
- Bute and Northern Ayrshire (UK Parliament constituency); 1918-1983
- Central Ayrshire (UK Parliament constituency); 1950-1983 and since 2005
- North Ayrshire and Arran (UK Parliament constituency); since 2005