Kualoa Ranch is the landowner of Kaʻaʻawa Valley, also commonly known as Kualoa Valley, on the windward coast of the island of Oʻahu in Hawaiʻi. This place was sacred to ancient Oahuans from the 13th to the 18th century, as it was where Laʻa-mai-kahiki settled after visiting Kauaʻi and before returning to Tahiti. It was also the site of the sacred drums of Kapahuula and Kaahu-ulapunawai as well as the sacred Hill of Kauakahi-a-Kahoʻowaha, the key to the sovereignty of the Kingdom of Oahu. In 1850 Dr. Garret P. Judd purchased the land that was only 622 acres at the time in 1850 from Kamehameha the third. Before it was owned by the ali'i (cheifs) and was served as a training ground for them. In 1860 Dr. Judd bough 2200 arces increasing the 622 acre land. Then in 1880 Dr. Judd bought 1188 arces of land. Which today is now the total of 4000 arces of land. This place was also a place of refuage for people. In 1941, World War I the U.S. military occupied the land and used it for protection, shelter and defense. Only after the war was it returned to the morgan family. The morgan family is the owners and decendents of Dr. Garett P. Judd.

Kualoa Ranch is open since the 1880's for tourist activities such as horseback riding and hiking, but is best known as a film location for productions such as Jurassic Park, Mighty Joe Young, Pearl Harbor, Windtalkers, Godzilla, and Lost.

It is located at coordinates 21°31′14″N 157°50′13″W on Kamehameha Highway, Hawaii State Route 83, between Kaaawa and Waikane.

A sugar plantation was started here by Gerrit P. Judd in the 19th-century, operated by his son-in-law Samuel Garner Wilder. It was the site of Kualoa Airfield during World War II. The entire ahupuaʻa (traditional land division of ancient Hawaii) was added to the National Register of Historic Places listings in Oahu as the Kualoa Ahupua'a Historical District, site 74000718 on October 16, 1974.