A by-election was held for the Niuas Noble seat to the Legislative Assembly of Tonga on 22 May 2014.

It was triggered by the death of the constituency's incumbent representative, Lord Fusituʻa, on 24 April 2014.

It covers the islands of Niuafoʻou and Niuatoputapu, and thus the lands allocated to three of the Kingdom's thirty-three titles of hereditary nobility.

The Niuas send one noble and one people's representative to Parliament, in separate votes.

Following the death of the incumbent Lord Fusituʻa, his son Mataʻiʻulua ‘i Fonuamotu inherited his title on May 6, and was thus able to participate in the by-election.