Japanese male names originate in the Japanese language and are typically written with kanji. Common masculine markers include endings such as -o (雄, 夫, 男), -rō/-ro (郎), -shi (志, 司), -suke (介, 助), and -tarō/-jirō used historically for birth order. The same general compounding patterns appear in female names, but male names more often use these masculine suffixes and kanji with meanings like “man,” “son,” or “assistant.”

In modern use, birth-order suffixes are less frequent. Boys’ names increasingly favor shorter forms and endings like -to, -ta, and -ya, while long-established styles remain in circulation. Examples from this list include Akihiro, Akio, Akitoshi, Atsushi, Akinobu, Bunji, Chikara, Daichi, Daigo, and Daijiro.