Surname 吉信 (吉信 
, Yoshinobu 
) , worldwide, is quite a rare cognomen. The family name 吉信 is habitual in Japan, where it is quite a rare surname, Taiwan, where it is a rare surname, and Singapore. Not in comparison with a country's population, it is the most numerous in Eastern Asia, particularly Japan, China, and Taiwan. Likewise, 吉信 is the forename as well as the last name.