BSEC promotes relationship with third parties (states, international organizations and institutions) interested to cooperate on various matters of mutual concern through dialogue partnership and sectoral dialogue partnership. 

• Hungary

• Islamic Republic of Iran

• Hashemite Kingdom of Jordan
   
• Japan

• Republic of Korea

• Montenegro
   
• Republic of Slovenia 

• United Kingdom of Great Britain and Northern Ireland

• Black Sea International Shipowners Association (BINSA)

• Black & Azov Seas Ports Association (BASPA)

• Union of Road Transport Association in the Black Sea Economic Cooperation Region (BSEC-URTA)

• Black Sea Region Association of Shipbuilders and Shiprepairers (BRASS)
   
• Black  Sea Universities Network (BSUN)

• Conference of Peripheral Maritime Regions of Europe (CPMR)

• Danube Commission

• International Network for SMEs (INSME)

• Regional Commonwealth in the Field of Communications (RCC)