Cisne Branco is a tall ship of the Brazilian Navy based at Rio de Janeiro, Brazil, to diplomatic operations worldwide.

Her keel was laid on 9 November 1998, and she was christened and launched on 4 August 1999, delivered to the Brazilian Navy on 4 February 2000.

The first Cisne Branco was the classic 15-metre (49 ft) wooden yacht Tritonia, which was designed by the legendary naval architect Alfred Mylne, and built by Alexander Robertson & Sons in 1910.

In 2010 she participated in Velas Sudamerica 2010, a historical Latin American tour by eleven tall ships to celebrate the bicentennial of the first national governments of Argentina and Chile.

Cisne Branco was freed a half hour later by tugs and returned to Guayaquil to be inspected for damage.