The following is the champion history of the IWGP Third Belt Championship (IGF).
Champion history[]
| Wrestlers: | Reigns: | Date: | Location: | Notes: |
|---|---|---|---|---|
| Brock Lesnar | 1 | October 8, 2005 | Tokyo, Japan | Brock Lesnar defeated Kazuyuki Fujita and Masahiro Chono in a Three Way match for the IWGP Heavyweight Championship New Japan Pro Wrestling stripped Lesnar of the title on July 15, 2006. IGF considered his reign still active and created the IGF version of the IWGP Heavyweight Championship. |
| Kurt Angle | 1 | June 29, 2007 | Tokyo, Japan | Kurt Angle appeared with and defended the title in Total Nonstop Action Wrestling (TNA), successfully retaining the championship against Samoa Joe on August 12, 2007, at TNA's Hard Justice pay-per-view (PPV) event. |
| Shinsuke Nakamura | 1 | February 17, 2008 | Tokyo, Japan | Shinsuke Nakamura defeated Kurt Angle to unify IGF's IWGP Third Belt Championship and NJPW's IWGP Heavyweight Championship. |
| Retired due to IGF and NJPW's IWGP Heavyweight Championship being Unified | ||||