The IWGP Junior Heavyweight Tag Team Championship is a professional wrestling tag team championship owned by the New Japan Pro Wrestling (NJPW) promotion. "IWGP" is the acronym of NJPW's governing body, the International Wrestling Grand Prix. The title was introduced on August 8, 1998 at a NJPW live event. The IWGP Junior Heavyweight Tag Team Championship is not the only tag team title contested for in NJPW; the IWGP Tag Team Championship is also sanctioned by NJPW. According to NJPW's official website, the Junior Heavyweight Tag Team Championship is listed as an "IWGP Jr. Tag Class", while the IWGP Tag Team Championship is considered an "IWGP Heavy Weight Class". The title is contested for by junior heavyweight wrestlers; the weight-limit for the title is per partner. Being a professional wrestling championship, the title is won as a result of a predetermined outcome.