Puerto Peñasco is a relatively small city in the northern state of Sonora, Mexico, on the shore of the Gulf of California (also known as the Sea of Cortez). The town is known for its fishing and tourism industries.

Puerto Peñasco, alternatively known among many of its English-speaking visitors as "Rocky Point," is a popular destination for tourists, particularly those that reside in the U.S. state of Arizona, for whom it is the nearest beach resort. It is also a popular Spring Break destination with students from Arizona, New Mexico, and California. Puerto Peñasco is located in the 'free zone' where tourists are not required to obtain immigration papers in order to visit (however, U.S. border agents advise that as of January 2008 a passport will be required to re-enter the United States).

Puerto Peñasco has two main beach areas. To the west of the Old Port area, there is a wide, flat area known as Sandy Beach. This is the home to several large hotel/resorts, and more are under construction. East of town, there is a long coast with several areas known in parts as La Mirador, Playa del Oro and then Las Conchas, an area of beachfront and near-beach condos, homes and timeshares.

The area features wide variations between high and low tides. With the shallowly sloping sea bed, this can lead to dramatic changes in the waterline twice a day. At the eastern beaches, this reveals a rocky reef with abundant sea life.