- Incumbents
- Events
- Incumbents
- Births
- Deaths
- See also
- References
{{Year in Japan|1638}}Events in the year 1638 in Japan. IncumbentsBirths- January 1 - Emperor Go-Sai (d. 1685)
References{{Japan year nav}}{{Asia topic|1638 in}} 4 : 1638 in Japan|1630s in Japan|1638 by country|Years of the 17th century in Japan |