"I'm pleased to confirm that a British hostage held in Yemen has been extracted by UAE forces in a military intelligence operation," Foreign Secretary Philip Hammond said in a statement.
Hammond added that the freed hostage was "safe and well" and that Britain was "very grateful for the assistance of the UAE".
The statement did not identify the person or give any further details of the operation to free them.
Yemen has been wracked by conflict since March, when a Saudi-led coalition launched air strikes against Iranian-backed Huthi rebels.
The war has killed nearly 4,500 people, many of them civilians, according to the United Nations.
Last year, British teacher Mike Harvey was released after being held for five months in Yemen following negotiations by the government in Sanaa.