| Club: | Mito HollyHock |
| Season: | 2023 |
| Chairman: | Kunio Numata |
| Manager: | Yoshimi Hamasaki |
| Stadium: | K's denki Stadium Mito |
| League: | J2 League |
| League Result: | 17th |
| Cup1: | Emperor's Cup |
| Cup1 Result: | Second round |
| Updated: | 18 May 2023 |
| Prevseason: | 2022 |
| Nextseason: | 2024 |
The 2023 season is Mito HollyHock's 29th season in existence and the club's 23rd consecutive season in the second division of Japanese football. In addition to the domestic league, Mito HollyHock will participate in this season's edition of the Emperor's Cup.
As of 17 May 2023.[1]
| Transfers in[2] | ||||
|---|---|---|---|---|
| Join on | Pos. | Player | Moving from | Transfer type |
| 16 May | GK |  John Higashi | Nagoya Grampus | Loan transfer |
| Pre-season | GK | Ryusei Haruna | Cerezo Osaka U18s | Free transfer |
| Pre-season | DF | Keita Matsuda | Toyo University | Free transfer |
| Pre-season | DF | Kazuma Nagai | Kyoto Sanga | Full transfer |
| Pre-season | DF | Yota Tanabe | Ococias Kyoto | Loan return |
| Pre-season | MF | Reo Yasunaga | Yokohama FC | Full transfer |
| Pre-season | MF | Ren Inoue | Toyo University | Free transfer |
| Pre-season | MF | Hidetoshi Takeda | Urawa Red Diamonds | Loan transfer |
| Pre-season | MF | Motoki Ohara | Sanfrecce Hiroshima | Loan transfer |
| Pre-season | FW | Yuki Kusano | FC Ryukyu | Full transfer |
| Pre-season | FW | Shimon Teranuma | Toin University of Yokohama | Free transfer |
| Pre-season | FW | Yusei Uchida | Mito HollyHock U18s | Promotion |
| Transfers out | ||||
|---|---|---|---|---|
| Leave on | Pos. | Player | Moving to | Transfer type |
| 17 Mar | DF | Keita Matsuda | FC Osaka | Loan transfer |
| Pre-season | GK | Akihito Ozawa | Blaublitz Akita | Free transfer |
| Pre-season | DF | Yuto Mori | Kamatamare Sanuki | Full transfer |
| Pre-season | DF | Yoshitake Suzuki | Fagiano Okayama | Full transfer |
| Pre-season | DF | Leonard Brodersen | Teutonia Ottensen | Free transfer |
| Pre-season | DF | SteviaEgbus Mikuni | FC Gifu | Free transfer |
| Pre-season | MF | Yutaka Soneda | Ehime FC | Full transfer |
| Pre-season | MF | Kaito Hirata | ReinMeer Aomori | Free transfer |
| Pre-season | MF | Shoma Otoizumi | Nagano Parceiro | Loan transfer |
| Pre-season | MF | Naoki Tsubaki | Yokohama F. Marinos | Loan expiration |
| Pre-season | MF | Kodai Dohi | Sanfrecce Hiroshima | Loan expiration |
| Pre-season | MF | Jun Kanakubo | – | Retirement |
| Pre-season | FW | Kosuke Kinoshita | Kyoto Sanga | Full transfer |
See main article: 2023 J2 League.
The league fixtures were announced on 20 January 2023.[3]
See main article: 2023 Emperor's Cup.