Third Avenue is a street in the New York City borough of Brooklyn.

It runs parallel to Fourth Avenue for most of its length, and it also runs under the Gowanus Expressway from the Prospect Expressway to 65th Street.

It has been mostly industrial for most of its existence, though the stretch of Third Avenue from Prospect Expressway to Downtown Brooklyn has recently undergone gentrification.

Notable structures on Third Avenue include the Coignet Building and the Somers Brothers Tinware Factory, two New York City designated landmarks at the intersection with Third Street.

This article relating to roads and streets in New York City is a stub.