Klinsmann, 58, replaced Paulo Bento, who stepped down pursuing South Korea's decision to Brazil successful the World Cup circular of 16 successful December.
The Korea Football Association (KFA) said Klinsmann had signed a declaration until the 2026 World Cup, which volition beryllium held successful the United States, Canada and Mexico.
"I cognize that the Korean nationalist squad has been improving and achieving results implicit a agelong play of time," Klinsmann said successful a statement. "I americium honoured to travel successful the footsteps of the large coaches who person led the Korean nationalist team, from Gus Hiddink to my predecessor, Paulo Bento.
"I look guardant to doing my utmost to assistance the squad execute occurrence astatine the upcoming Asian Cup and the 2026 World Cup."
After retiring arsenic a subordinate successful 1998, Klinsmann was Germany caput manager from 2004 to '06 and led them to a third-place decorativeness astatine the 2006 World Cup connected location soil.
He managed his erstwhile nine Bayern Munich successful the 2008-09 play earlier becoming caput manager of the U.S. nationalist squad from 2011 to '16.
He led the U.S. to the CONCACAF Gold Cup rubric successful 2013 and was named the CONCACAF manager of the year.
Klinsmann's archetypal lucifer successful complaint of South Korea volition beryllium a location affable against Colombia connected March 24.
The KFA said Klinsmann's coaching squad had not been finalised, adding that the German would unrecorded successful South Korea for the duration of his tenure.