Brightlingsea Harbour is a small mixed leisure and commercial port with a rich heritage, situated in Brightlingsea Creek close to the mouth of the Colne Estuary where it meets the Blackwater and Thames Estuaries.

The Harbour is within a nature conservation area of international importance. The River Colne is navigable on the tide for 7 miles to Colchester in Essex and the River Blackwater is navigable for 11 miles to Maldon. Brightlingsea is a day sail from most ports on the Thames Estuary.

Brightlingsea Harbour is a Trust Port managed by Brightlingsea Harbour Commissioners. The Harbour Master leads a dedicated team of permanent and seasonal staff who oversee the day to day activities within the Harbour.