IWGP Junior Heavyweight Championship

Statistics
First champion	Shiro Koshinaka
Most reigns	Jushin Thunder Liger; (11 reigns)
Longest reign	Jushin Thunder Liger; (sixth reign, 628 days)
Shortest reign	Juventud Guerrera; (first reign, 7 days)
Oldest champion	El Desperado; (41 years and 6 days)
Youngest champion	Black Tiger; (22 years, 11 months and 10 days)

IWGP Junior Heavyweight Championship
IWGP Junior Heavyweight Championship
	The IWGP Junior Heavyweight Championship belt
Details
Promotion	New Japan Pro-Wrestling (NJPW)
Date established	February 6, 1986
Current champion	Douki
Date won	October 6, 2025
Other names
	IWGP Junior Heavyweight Championship; (1986–present); IWGP Jr. Heavyweight Championship;
First champion
Statistics
First champion	Shiro Koshinaka
Most reigns	Jushin Thunder Liger; (11 reigns)
Longest reign	Jushin Thunder Liger; (sixth reign, 628 days)
Shortest reign	Juventud Guerrera; (first reign, 7 days)
Oldest champion	El Desperado; (41 years and 6 days)
Youngest champion	Black Tiger; (22 years, 11 months and 10 days)

The IWGP Junior Heavyweight Championship (IWGPジュニアヘビー級王座, IWGP juniahebī-kyū ōza) is a professional wrestling world junior heavyweight championship owned by the New Japan Pro-Wrestling (NJPW) promotion. "IWGP" is the acronym of NJPW's governing body, the International Wrestling Grand Prix (インターナショナル・レスリング・グラン・プリ, intānashonaru resuringu guran puri). Only wrestlers under the junior heavyweight weight-limit may hold the championship. NJPW currently controls two junior heavyweight championships: the IWGP Junior Heavyweight Championship and the IWGP Junior Heavyweight Tag Team Championship. The weight-limit for the title is 100 kg (220 lb). The current champion is Douki, who is in his second reign.