The Custom House is a grade II* listed building located on St Georges Quay, Lancaster, Lancashire, England.

Designed in 1764 for the Port Commissioners, it was used for its original purpose until 1882 when the Customs were transferred to Barrow-in-Furness.

[1] Adjacent to the Custom House is a later bonded warehouse, which forms part of the Maritime Museum.

[2] The museum's exhibits include local fishing vessels, ship models, area merchants and trade, including the slave trade, the Lancaster Canal, area fishing industry, the development of the local ports of Glasson, Heysham, Sunderland Point, and Morecambe, and the social and natural history of Morecambe Bay.

This article about a Lancashire building or structure is a stub.