The Ambassador of the United Kingdom to Mexico is the United Kingdom's foremost diplomatic representative in the United Mexican States, and head of the UK's diplomatic mission in Mexico. The post was last held by Jon Benjamin until May 2024, when he was removed as the ambassador after a video emerged showing Benjamin aiming an assault rifle at a local embassy employee. The post remains vacant. Besides the embassy in Mexico City, the UK also maintains a consulate general in Cancun.

Heads of mission

Envoy Extraordinary and Minister Plenipotentiary to the Republic of Mexico

Envoy Extraordinary and Minister Plenipotentiary to the Emperor of Mexico

Envoys Extraordinary and Minister Plenipotentiary to Mexico

Ambassadors Extraordinary and Plenipotentiary to Mexico