Cabo San Lucas (Spanish pronunciation: [ˈkaβo san ˈlukas], Cape Saint Luke), commonly called Cabo, is a city at the southern tip of the Baja California peninsula, in the municipality of Los Cabos in the Mexican state of Baja California Sur. As of the 2010 census, the population was 68,463 people. It is the third-largest city in Baja California Sur after La Paz and San José del Cabo (although it is only slightly less populous than San José del Cabo), it has experienced very rapid growth and development, often with adverse environmental impact.

Cabo is known for its sandy beaches, world-class scuba diving locations, balnearios, the distinctive sea arch El Arco de Cabo San Lucas, and abundant marine life. The Los Cabos Corridor has become a heavily trafficked holiday destination with numerous resorts and timeshares along the coast between San Lucas and San José del Cabo.