Nairnshire was a constituency of the Parliament of Scotland before the Union with England in 1707. The barons of the shire or sheriffdom of Nairn elected two commissioners to represent them in the Parliament and in the Convention of Estates.
At the time of the Union Hugh Rose, commissioner for Nairnshire was chosen as one of the Scottish representatives to the first Parliament of Great Britain. From 1708 Nairnshire elected one Member of Parliament to the British House of Commons.