Last name 信田 (信田 
, Nobuta 
) , around the world, is a rare family name. The surname 信田 is habitual in Japan, where it is a very rare surname, China, where it is an extremely rare surname, and Vietnam. In absolute terms, the name is most common in China, Japan, and the United States. More frequently, 信田 is the forename as well as the last name.