Surname Trumba (Rumpu 
, Tromba 
, Trumba 
) , worldwide, is a rare last name. The family name Trumba is habitual in Croatia, where it is quite a rare surname, Italy, where it is a rare surname, and Argentina. In absolute terms, it is commonest in the United States, Italy, and Argentina. Much less frequently, Trumba is the forename as well as the last name.