| OZ Academy Openweight Championship | Mayumi Ozaki | 27 Apr 2024 to 29 Apr 2024 | 3 |
| AJPW TV Six Man Tag Team Championship | Maya Yukihi, Mayumi Ozaki and Suwama | 21 Oct 2023 to 30 Apr 2024 | 193 |
| AAAW Championship | Mayumi Ozaki | 07 Aug 2023 to 30 Apr 2024 | 268 |
| OZ Academy Tag Team Championship | Jaguar Yokota and Mayumi Ozaki | 23 Apr 2023 to 30 Apr 2024 | 374 |
| Blast Queen Championship | Mayumi Ozaki | 25 Aug 2019 to 23 Feb 2020 | 183 |
| OZ Academy Openweight Championship | Mayumi Ozaki | 14 Apr 2019 to 03 Apr 2021 | 721 |
| JWP Openweight Championship | Mayumi Ozaki | 16 Aug 2015 to 02 Apr 2016 | 231 |
| OZ Academy Tag Team Championship | Mayumi Ozaki and Mio Shirai | 19 Jul 2015 to 22 Aug 2015 | 35 |
| OZ Academy Tag Team Championship | Mayumi Ozaki and Sakura Hirota | 23 Sep 2014 to 28 Feb 2015 | 159 |
| OZ Academy Tag Team Championship | Mayumi Ozaki and Yumi Ohka | 10 Feb 2013 to 09 Mar 2013 | 28 |
| OZ Academy Openweight Championship | Mayumi Ozaki | 21 Aug 2011 to 24 Mar 2012 | 217 |
| OZ Academy Tag Team Championship | KAORU and Mayumi Ozaki | 03 Jun 2009 to 01 Aug 2009 | 60 |
| OZ Academy Openweight Championship | Mayumi Ozaki | 11 Jan 2009 to 21 Feb 2009 | 42 |
| OZ Academy Tag Team Championship | KAORU and Mayumi Ozaki | 10 Aug 2008 to 04 Feb 2009 | 179 |
| AAAW Tag Team Championship | KAORU and Mayumi Ozaki | 07 Apr 2002 to 19 Oct 2002 | 196 |
| AAAW Championship | Mayumi Ozaki | 14 Jan 2001 to 27 Oct 2001 | 287 |
| AAAW Tag Team Championship | Akira Hokuto and Mayumi Ozaki | 17 Dec 2000 to 21 Apr 2001 | 126 |
| AAAW Tag Team Championship | Aja Kong and Mayumi Ozaki | 23 Aug 1998 to 17 Jul 1999 | 329 |
| JWP Tag Team Championship | Hikari Fukuoka and Mayumi Ozaki | 08 Jan 1995 to 17 Mar 1995 | 69 |
| JWP Tag Team Championship | Hikari Fukuoka and Mayumi Ozaki | 08 Jan 1995 to 17 Mar 1995 | 69 |
| JWP Tag Team Championship | Cutie Suzuki and Mayumi Ozaki | 02 Dec 1993 to 26 Mar 1994 | 115 |
| JWP Tag Team Championship | Cutie Suzuki and Mayumi Ozaki | 02 Dec 1993 to 26 Mar 1994 | 115 |
| WWWA Tag Team Championship | Dynamite Kansai and Mayumi Ozaki | 11 Apr 1993 to 05 Dec 1993 | 239 |
| WWWA Tag Team Championship | Dynamite Kansai and Mayumi Ozaki | 11 Apr 1993 to 05 Dec 1993 | 239 |
| JWP Tag Team Championship | Cutie Suzuki and Mayumi Ozaki | 09 Aug 1992 to 20 Mar 1993 | 224 |
| JWP Tag Team Championship | Cutie Suzuki and Mayumi Ozaki | 09 Aug 1992 to 20 Mar 1993 | 224 |
