The Indian River Lagoon Scenic Highway is a scenic byway located in Florida. Basically, the Highway is actually a collection of several roads, mostly running north and south along either side of the Indian River Lagoon, connected by other roads running over the Lagoon. The two main north–south roads are:

• US 1 along the western side of the Lagoon
• A1A, and State Road 3 along the eastern side of the Lagoon

The east west connectors are, from north to south:

• State Road 402, Playalinda Beach Road, at the northernmost reach of the Lagoon. This road deadends.
• State Road 405 connecting US 1 to State Road 3

The remainder of the east–west roads connect US 1 to A1A:

• State Road 528
• State Road 520
• State Road 404 over the Pineda
• The Eau Gallie Causeway (State Road 518)
• The Melbourne Causeway (U.S. Highway 192)
• The Wabasso Causeway at the south end of the Lagoon