Newport Harbor High School is a public high school in Newport Beach, in Orange County, California, in the United States. It is part of the Newport-Mesa Unified School District. The school primarily serves students in western Newport Beach and southern Costa Mesa.

Newport Beach is a coastal city of about 85,000 in southern Orange County, California, United States. Located about 40 miles (64 km) southeast of downtown Los Angeles, Newport Beach is known for its sandy beaches. The city's harbor once supported maritime industries. Today it is used mostly for recreation. Balboa Island draws visitors with a waterfront path and easy access from the ferry to the shops and restaurants.