Jacksonville Sister Cities Association (JSCA) has eight Sister Cities:

• Curitiba, Brazil
• Bahia Blanca, Argentina
• Masan, South Korea
• Murmansk, Russia
• Nantes, France
• Port Elizabeth, South Africa
• San Juan, Puerto Rico
• Yingkou, China

JSCA also has three Friendship Cities in China: Ningbo, Shaoxing and Suzhou.