Marabanong is a historic mansion in Jacksonville, Florida, United States.

It was built in 1876 on the site of Perley Place, the antebellum mansion purchased in 1870 by British astronomer Thomas Basnett that was originally built by Thomas Perley and destroyed in a fire.

[2] It was added to the National Register of Historic Places on December 11, 2013.

[3] Basnett (born 1808 - died 1886) was a prominent British astronomer and meteorologist.

In 1876 he constructed Marabonong on a promontory above the St. Johns River near Jacksonville, Florida.