The Japan–Korea (JAKO) submarine cable system is a 260-kilometer high-speed undersea optical fiber cable linking Fukuoka, Japan, with Busan, Korea.

The JAKO consortium comprises Microsoft (MS), Amazon Web Services (AWS), Korean operator Dreamline, and Japanese operator Arteria Networks, partnered with LS Cable & System as the turn-key supplier.

LS Cable & System becomes the first company in Korea's cable industry to secure an EPC (Engineering, Procurement, Construction) contract for an international undersea communication network.

The construction of the JAKO cable system is scheduled to begin in 2025 and conclude by 2027.

In addition to the JAKO cable system, there is an existing Korea-Japan Cable Network (KJCN) connecting Fukuoka, Japan, with Busan, Korea.