Trajano (also briefly called Toneleiros) was a cruiser-type warship belonging to the Imperial Brazilian Navy from 1873 to 1889 and later to the Brazilian Navy from 1889 to 1906.

Its name was given by request of emperor Pedro II as a tribute to naval engineer Trajano Augusto de Carvalho [pt], who was the ship's designer.

[1][2] The ship was built of wood and steel, displacing a total of 1392 tonnes.

It was powered by John Penn and Sons steam engines and sails, which produced a total of 2400 HP propelling the ship to a maximum speed of 12 knots.

[1][2] With the outbreak of the Navy Revolt, promoted by units of the Brazilian Navy against the government of the newly proclaimed Brazilian Republic after the 1889 Coup, Trajano was seized by the rebels, taking part in the revolt in 1893 and bombing fortified positions in Rio de Janeiro.