The Lord Chancellor of Scotland, formally titled Lord High Chancellor, was an Officer of State in the Kingdom of Scotland. The Lord Chancellor was the principal Great Officer of State, the presiding officer of the Parliament of Scotland, the Keeper of the Great Seal, the presiding officer of the Privy Council (until 1626), and a judge of the College of Justice.
Holders of the office are known from 1123 onwards, but its duties were occasionally performed by an official of lower status with the title of Keeper of the Great Seal. From the 15th century, the Chancellor was normally a bishop or a peer.
Following the Union, the Lord Keeper of the Great Seal of England became the first Lord High Chancellor of Great Britain, but the Earl of Seafield continued as Lord Chancellor of Scotland until 1708. He was re-appointed in 1713 and sat as an Extraordinary Lord of Session in that capacity until his death in 1730.