SuperSeaCat was a shipping company operating fast ferries between Helsinki, Finland and Tallinn, Estonia during the years 2006–2008.

From the year 2000 onwards the company operated one SuperSeaCat (later three) under Silja Line brand between Helsinki and Tallinn.

However, the Silja Line SuperSeaCat's could not be included in the sale as by acquiring them Tallink would have had a dominant market position in Helsinki—Tallinn fast ferry traffic.

As a result, Sea Containers established SuperSeaCat as a new subsidiary to continue traffic on the route.

In January 2008 SeaContainers sold 50% of the SuperSeaCat operations to the Greece-based Aegean Speed Lines.