Baby Names Boy Names Meaning of the Name Zenjiro Updated January 12, 2026 by Jennifer M. Zenjiro Gender: Male Origin: Japanese Meaning: Just Second-born Son ♥ Add to my Namelist What is the meaning of the name Zenjiro? The name Zenjiro is primarily a male name of Japanese origin that means Just Second-born Son. People who like the name Zenjiro also like: Yuuta, Daishiro, Kazou, Ichiro, Zenshiro, Hideyoshi, Zentaro, Momoka, Naoko, Tsubame, Kaida, Hatsu, Yoshi, Ayano Names like Zenjiro: Zenshiro Stats for the Name Zenjiro Zenjiro is currently not in the top 100 on the Baby Names Popularity Charts Zenjiro is currently not ranked in U.S. births