Baby Names Boy Names Meaning of the Name Zenjiro Updated May 13, 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: Zentaro, Yuuta, Daishiro, Keiji, Zenshiro, Hosei, Ichiro, Ayano, Yoshi, Naoko, Hatsu, Kaiyo, Kaida, Yori 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