The Twin Peaks are two prominent hills with an elevation of about 925 feet (282 m) located near the geographic center of San Francisco, California.

The North and South Twin Peaks, also known as “Eureka” and “Noe” respectively, are about 660 ft (200 m) apart. The peaks form a divide for the summer coastal fog pushed in from the Pacific Ocean. Their west-facing slopes often get fog and strong winds, while the east-facing slopes receive more sun and warmth. Elevation at each summit is just over 900 feet (270 m). Thin, sandy soil is commonplace on Twin Peaks, making them susceptible to erosion. On some rare occasions, Twin Peaks has been able to get a dusting of snow especially on February 5, 1976, when it got several inches of snow. Most recently on February 26, 2011, and February 5, 2019, Twin Peaks got a few flurries of snowflakes.

The top of Twin Peaks is undeveloped. It is part of the 31 acres (13 ha) Twin Peaks Natural Area, managed and owned by the San Francisco Recreation and Parks Department. These preserved areas are home to many natural resources and wildlife. As part of the Mission blue butterfly habitat conservation, Twin Peaks is one of the few remaining habitats for this endangered species. Many bird species, insects and vegetation thrive in these areas.

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