Cô Tô is an island in Cô Tô District, Quảng Ninh Province, Vietnam.

Cô Tô is a small island which is a well known tourist destination Cô Tô (Coto island) is over 4000 in population

The island has three beaches – Van Chay beach, Hong Van beach and Bac Van Beach.

20°59′28″N 107°45′22″E / 20.991°N 107.756°E / 20.991; 107.756