First, a run-down of the particulars:
- A limit of 117 pounds is observed for this list.
- The inception of the title was the first fight in the division between the two Strawweight winners from the prior card.
Your current lineal Strawweight champion is vacant
The full history is below. Note, the colored backgrounds indicate a title change.
MMA Strawweight Lineal Championship History
| Date | Champion | Outcome | Challenger | Notes |
| 2003-09-05 | Takehiro Harusaki | WIN | Issei Tsurumi | Inception |
| 2005-05-08 | Takehiro Harusaki | WIN | Atsushi Takeuchi | |
| 2007-03-30 | Takehiro Harusaki | WIN | Kenichi Sawada | |
| 2007-05-26 | Takehiro Harusaki | WIN | Atsushi Takeuchi | |
| 2007-07-20 | Rambaa Somdet | WIN | Takehiro Harusaki | |
| 2008-09-28 | Rambaa Somdet | WIN | Noboru Tahara | |
| 2009-11-23 | Rambaa Somdet | WIN | Noboru Tahara | |
| 2010-07-19 | Rambaa Somdet | WIN | Hiroyuki Abe | |
| 2011-10-15 | Rambaa Somdet | WIN | Ryota Uozumi | |
| 2014-09-28 | Yoshitaka Naito | WIN | Shinya Murofushi | Somdet’s assumed retirement or lack of relevant fights yields to this fight for continuity. |
| 2015-07-26 | Yoshitaka Naito | WIN | Ryuto Sawada | |
| 2015-11-29 | Yoshitaka Naito | WIN | Junji Ito | Naito vacates — leaves to OneFC Strawweight which is 125lb limit. |
| 2018-09-30 | Haruo Ochi | WIN | Mitsuhisa Sunabe | Top contender fight. |
| 2019-03-09 | Haruo Ochi | WIN | Namiki Kawahara | |
| 2019-08-18 | Haruo Ochi | NC | Jarred Brooks | |
| 2019-12-28 | Jarred Brooks | WIN | Haruo Ochi | Brooks abandons division after this fight. |
