Look up nankai in Wiktionary, the free dictionary.

Nankai (南开) is a series of schools in China.

Nankai (Chinese: 南开; Japanese: 南海) may also refer to:

• Nankai District (南开区), Tianjin, China
• Nankai Electric Railway (南海電気鉄道), a railway company in Japan
• Nankai Club and Nankai Hawks, (南海ホークス), former names of the Fukuoka SoftBank Hawks, a professional Japanese baseball team
• Nankai Broadcasting (南海放送), a broadcasting company in Japan
• Nankai Trough (南海トラフ), a submarine trough south of Japan
• Nankai megathrust earthquakes (南海巨大地震), a series of earthquakes that occur in and around the Nankai trough