Annapolis (formerly Monti) is an unincorporated community in Sonoma County, California, United States.

Annapolis is situated near the coastline of northern Sonoma County, and is 5 miles (8.0 km) north-northeast of the nearest community, Stewarts Point.

However, extensive settlement did not occur until the early 1870s, when San Francisco developer J.C. Beatty claimed and cleared approximately 1200 acres of redwood forest for resale.

The area was known for its output of fresh and dried apples, producing then-popular varieties such as the Gravenstein and Baldwin.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.