Seoul's chief nuclear negotiator Noh Kyu-duk will travel to Tokyo for three days on Sunday to discuss North Korea's nuclear issues.
On Tuesday, he will meet his U.S. counterpart Sung Kim and his Japanese counterpart Takehiro Funakoshi.
They will discuss managing the situation on the Korean Peninsula and cooperation for the peace process.
This follows the North's military parade this week and speculation that the regime may have restarted its nuclear reactor at Yongbyon.
The three envoys last met together in June.
Aside from the three-way meeting, they will also hold bilateral talks.