State Road 676 (SR 676) is a short state highway running west and east southeast of Tampa, Florida.

It is named Causeway Boulevard, and serves as a connecting route to U.S. Route 41 Business (US 41 Bus.).

Causeway Boulevard extends further east as a non-State Road that crosses over Interstate 75 (I-75) and passes by the Westfield Brandon mall before it turns into Lumsden Road.

The entire route is in Hillsborough County.