Playas de Rosarito (Rosarito Beach) is a city in the Mexican state of Baja California located approximately 35 minutes south of the U.S. border in Tijuana. Its beaches and dance clubs are a popular destination for young people from the United States during the Memorial Day and Labor Day weekends. Playas de Rosarito is the seat of the municipality of Rosarito.

The fourth stage of Rosarito's history was centered around tourism. It began with the Barbachano family's establishment of the Rosarito Beach Hotel and Rene's bar in 1925. The family, who have been prominent in politics and culture in Mexico since the early 19th century, also built the first highway, allowing tourists from San Diego to visit the area.

Now days, Rosarito offers more than 900 hotel rooms from 25 resorts, hotels & motels; golf courses and spas. The Popotla Boulevard area in south Rosarito is developing a reputation for original art and furniture manufacturing. Around 2005 the latest real estate boom began in Rosarito and what is often called "the Baja Gold Coast." Within a few years, scarcely a piece of oceanfront property large enough for a condominium resort was left unsold to developers. Even Donald Trump associated his name with a condo-hotel project north of Rosarito Beach just over the Tijuana city limits; while the developers insist the project will still be built, they announced a loss of financing in November 2008 due to the worldwide financial crisis. In August 2008 the Rosarito Beach Hotel opened a new condo-hotel tower.