A by-election was held for the ʻEua Noble seat to the Legislative Assembly of Tonga on 2 August 2012.

It was triggered by the dismissal from Parliament of the incumbent, the Speaker Lord Lasike, following his conviction for illegal possession of ammunition in July.

There were fourteen titles of hereditary nobility attached to the constituency, entitling their bearers to vote and be elected.

However, Lord Lasike was barred from the election, while the Lavaka title was at that time held by King Tupou VI.

Prince Ata, the King's younger son, received one vote, as did Lord Veʻehala.