| Strongest-K Championship | |
| Promotion: | Kaientai Dojo |
| Created: | July 3, 2004 |
| Retired: | May 26, 2019 |
| Mostreigns: | Kengo Mashimo 6 reigns |
| Firstchamp: | Hi69 |
| Finalchamp: | Ayato Yoshida |
| Longestreign: | Kengo Mashimo 552 days |
| Shortestreign: | Kaji Tomato 20 days |
| Oldest: | Miyawaki 36 years, 63 days |
| Youngest: | Hi69 22 years, 70 days |
| Heaviest: | Daisuke Sekimoto 264 lbs (120 kg) |
| Lightest: | Taka Michinoku 169 lbs (77 kg) |
The Strongest-K Championship was the top singles title in Kaientai Dojo and was established in 2004. The holder of the title was referred to as the "Champion of Strongest-K". There have been a total of 27 reigns and one vacancy shared between 16 different champions. The final title holder was Ayato Yoshida.
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| Rank | Wrestler | No. of reigns | Combined defenses | Combined days |
|---|---|---|---|---|
| 1 | 6 | 34 | 1,965 | |
| 2 | 4 | 9 | 724 | |
| 3 | 2 | 12 | 549 | |
| 4 | 2 | 6 | 534 | |
| 5 | 2 | 6 | 356 | |
| 6 | 1 | 5 | 301 | |
| 7 | Joe | 1 | 3 | 276 |
| 8 | 1 | 2 | 121 | |
| 9 | 1 | 2 | 113 | |
| 10 | 1 | 3 | 83 | |
| 11 | 1 | 2 | 90 | |
| 12 | 1 | 1 | 70 | |
| Saburo Inematsu | 1 | 1 | 70 | |
| 14 | 1 | 1 | 63 | |
| 15 | 1 | 0 | 43 | |
| 16 | 1 | 0 | 20References |