Kao

There is more than one place called Kao:

Finland

 * code for Kuusamo Airport

Indonesia

 * Kao (Indonesia), a small coastal town on the eastern Indonesian island of Halmahera

Lesotho

 * Kao (Lesotho), a community council located in the Butha-Buthe District of Lesotho

Niger

 * Kao (Niger), a village and rural commune in Niger

Togo

 * Kao (Togo), a village in the Assoli Prefecture in the Kara Region

Tonga

 * Kao Island, an island in Tonga formed by an extinct volcano