Sant'Andrea is a small island in the Venetian Lagoon, northern Italy.
 View of the Island of Sant'Andrea from the Porto di San Nicolò at the Lido of Venice | |
  Sant'Andrea | |
| Geography | |
|---|---|
| Coordinates | 45°26′05″N 12°22′52″E / 45.434602°N 12.381146°E |
| Adjacent to | Venetian Lagoon |
| Administration | |
| Region | Veneto |
| Province | Province of Venice |
It houses the Forte di Sant'Andrea, a large fortress built in the 16th century to defend Venice. Sant'Andrea constitutes a prolongation of the island of Vignole, from which it is separated by a narrow channel, towards the Porto di Lido-San Nicolò on the Lido, between Venice's Island and the island of Sant'Erasmo.
