The Trucial States (Arabic: الإمارات المتصالحة, romanized: Al-Imārāt al-Mutaṣāliḥa), also known as the Trucial Coast (Arabic: الساحل المتصالح, romanized: Al-Sāḥil al-Mutaṣāliḥ), the Trucial Sheikhdoms (Arabic: المشيخات المتصالحة, romanized: Al-Mashyakhāt al-Mutaṣāliḥa), Trucial Arabia or Trucial Oman, was a group of tribal confederations to the south of the Persian Gulf (southeastern Arabia) whose leaders had signed protective treaties, or truces, with the United Kingdom between 1820 and 1892.

The Trucial States remained an informal British protectorate until the treaties were revoked on 1 December 1971. The following day, six of the sheikhdoms—Dubai, Abu Dhabi, Sharjah, Ajman, Umm Al Quwain and Fujairah—formed the United Arab Emirates; the seventh, Ras Al Khaimah, joined on 10 February 1972.