Cognomen 智弘 (Zhihong 
, Tomohiro 
, 智弘 ) , worldwide, is quite a rare surname. The cognomen 智弘 is habitual in Vanuatu, where it is quite a common surname, Singapore, where it is quite a rare surname, and Japan, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in China, Japan, and Vanuatu. Predominantly, 智弘 is the forename as well as the last name.