Kazuo is a male given name and is of Japanese origin. It means first son, first in leadership or harmonious, peaceful man. The name is currently in the top 750 of NameChef Most Popular Baby Names and in the top 1000 of U.S birth chart of the year 1922.
Kazuo is a common Japanese name though not well-known in western countries. The different meanings depends on the Japanese characters used.
Kazuo is a boy's name.