The Kealakekua Bay State Historical Park is a state park and historic site in Kealakekua, Hawaii. It is best noted for being the site where the first extensive contact of Hawaiians and Westerners ever took place.

A designated US Historic District and listed on the National Register of Historic Places, the Kealakekua Bay State Historical Park is located on the Kona coast. The park is also a Marine Life Conservation District and is considered as an excellent spot for snorkeling and kayaking. A famous tourist attraction, people also come to the site for its history and heritage, especially with its several archaeological and historical sites. One great example is the Hikiau Heiau, which is a traditional religious site that attracts all sorts of visitors regularly.