Balboa Island is an area of Newport Beach, California, actually comprising three modified or artificial islands in Newport Harbor: Balboa Island , the largest; the smaller Little Balboa Island to the east of Balboa Island, joined by a two-lane bridge; and the smallest Collins Island  to the northwest of Balboa Island, joined by a one-lane bridge. The Balboa Island community is joined to the mainland by a short two-lane bridge on the northeast of Balboa Island, and a privately-operated fleet of three, three-car ferryboats (Balboa Island Ferry) which provide access across the harbor to the Balboa Peninsula which lies to the south.

Balboa Island on alue Newport Beachissa, Kaliforniassa. Balboa Island muodostuu kolmesta keinotekoisesta saaresta.