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; born 1979), Japanese footballer
• Sakae Tsuboi (壺井 栄; 1899–1967), Japanese writer and poet
• Shigeji Tsuboi (壺井 繁治; 1897–1975), Japanese poet
• Sho Tsuboi (坪井 翔; born 1995), Japanese racing driver
• Tatsuya Tsuboi (壷井 達也; born 2002), Japanese figure skater
• Tomochika Tsuboi (坪井 智哉; born 1974), Japanese baseball player
• Tomohiro Tsuboi (坪井 智浩; born 1971), Japanese voice actor
• Unoko Tsuboi (壷井 宇乃子; born 1917), Japanese swimmer