San Luis

There is more than one place called San Luis:

Argentina

 * San Luis (city, Argentina) — The capital of San Luis Province
 * San Luis (province, Argentina) — A province in the Cuyo region

Mexico

 * San Luis Potosi — The capital city of the state of San Luis Potosi
 * San Luis Potosi (state) — A state in the Bajío region
 * San Luis Rio Colorado — A city in Sonora

Philippines

 * San Luis (Batangas) — A coastal town south of Taal.
 * San Luis (Pampanga)

United States of America

 * San Luis (Arizona) — A town in Arizona.
 * San Luis Obispo — A city in California.