Compton Acres is a large privately owned garden in Poole, Dorset, England. It was founded in 1920 by Thomas William Simpson, an entrepreneur who had become wealthy through the manufacture of margarine. The gardens are a popular tourist attraction. Compton Acres consists of five themed sub-gardens: an Italian garden, a rock and water garden, a heather garden, a Japanese garden and a less formal woodland garden called the "Wooded Valley". Since 1986, Compton Acres has been Grade II* listed.