| Ryo Kato | |
| Birth Date: | 20 August 1991 |
| Birth Place: | Japan |
| Position: | Defender, Midfielder |
| Currentclub: | Prey Veng |
| Clubnumber: | 5 |
| Youthclubs1: | Yamanashi Gakuin High School |
| College1: | Yamanashi Gakuin University |
| Years1: | –2012 |
| Clubs1: | Fontana Finthen |
| Years2: | 2012–2014 |
| Clubs2: | Rot-Weiß Darmstadt |
| Caps2: | 55 |
| Goals2: | 3 |
| Years3: | 2014–2015 |
| Clubs3: | Sportfreunde Siegen |
| Caps3: | 14 |
| Goals3: | 1 |
| Years4: | 2014–2015 |
| Clubs4: | → Sportfreunde Siegen II (loan) |
| Caps4: | 5 |
| Goals4: | 0 |
| Years5: | 2016 |
| Clubs5: | Titograd |
| Caps5: | 2 |
| Goals5: | 0 |
| Years6: | 2016 |
| Clubs6: | SV Gonsenheim |
| Caps6: | 7 |
| Goals6: | 0 |
| Years8: | 2017 |
| Clubs8: | Kamza |
| Caps8: | 4 |
| Goals8: | 0 |
| Years9: | 2018–2020 |
| Clubs9: | Basara Mainz |
| Caps9: | 28 |
| Goals9: | 2 |
| Years10: | 2023–2024 |
| Clubs10: | Prey Veng |
| Caps10: | 23 |
| Goals10: | 0 |
Ryo Kato (Japanese: 加藤亮; born 20 August 1991) is a Japanese footballer who plays as a defender or midfielder for Prey Veng in the Cambodian Premier League.
In 2014, Kato signed for German fifth division side Sportfreunde Siegen from Fontana Finthen in the German sixth division.
Before the second half of 2015/16, he signed for Montenegrin club Titograd, helping them win the league.[1]
Before the second half of 2016/17, he signed for Kamza in the Albanian second division.
In 2018, Kato signed for German fifth division team Basara Mainz.