Tsuboi

Tsuboi (written: 坪井, 壺井 or 壷井) is a Japanese surname. Notable people with the surname include:


 * Keisuke Tsuboi (坪井 慶介), Japanese footballer
 * Sakae Tsuboi (壺井 栄), Japanese writer and poet
 * Shigeji Tsuboi (壺井 繁治), Japanese poet
 * Sho Tsuboi (坪井 翔), Japanese racing driver
 * Tatsuya Tsuboi (壷井 達也), Japanese figure skater
 * Tomochika Tsuboi (坪井 智哉), Japanese baseball player
 * Tomohiro Tsuboi (坪井 智浩), Japanese voice actor
 * Unoko Tsuboi (壷井 宇乃子), Japanese swimmer