Bannside was a single-member county constituency of the Parliament of Northern Ireland.

The constituency sent one MP to the House of Commons of Northern Ireland from 1929 until the Parliament was temporarily suspended in 1972, and then formally abolished in 1973.

In terms of the then local government areas the constituency in 1929 comprised parts of the Rural Districts of Antrim, Ballymena and Ballymoney.

The parliamentary representatives of the division were elected using the first past the post system.

When Ian Paisley was created a life peer in 2010, he took his title of Baron Bannside, of North Antrim in the County of Antrim from the constituency he had won in 1970.