| Tomonobu Yokoyama 横山 知伸 | |
| Upright: | 1.1 |
| Birth Date: | 1985 3, df=yes |
| Birth Place: | Nerima, Tokyo, Japan |
| Height: | 1.84 m |
| Position: | Defensive midfielder, centre-back |
| Youthyears1: | 2004–2007 |
| Youthclubs1: | Waseda University |
| Years1: | 2008–2011 |
| Caps1: | 76 |
| Goals1: | 1 |
| Years2: | 2012–2013 |
| Caps2: | 20 |
| Goals2: | 3 |
| Years3: | 2014–2017 |
| Caps3: | 81 |
| Goals3: | 4 |
| Years4: | 2017–2018 |
| Caps4: | 26 |
| Goals4: | 2 |
| Years5: | 2018 |
| Clubs5: | → Roasso Kumamoto (loan) |
| Caps5: | 7 |
| Goals5: | 0 |
| Years6: | 2019 |
| Caps6: | 0 |
| Goals6: | 0 |
was a Japanese professional footballer who played as a defensive midfielder or centre-back.
On 5 February 2020, FC Gifu confirmed that 34-year old Yokoyama had decided to retire.[1] He died from a brain tumour on 4 January 2024, at the age of 38.[2]
| Club | Season | League | Emperor's Cup | J.League Cup | Asia | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| Kawasaki Frontale | 2008 | J1 League | 16 | 0 | 0 | 0 | 3 | 0 | – | 19 | 0 | ||
| 2009 | 26 | 0 | 3 | 0 | 3 | 0 | 9 | 0 | 41 | 0 | |||
| 2010 | 24 | 0 | 4 | 0 | 2 | 1 | 2 | 0 | 32 | 1 | |||
| 2011 | 10 | 1 | 0 | 0 | 2 | 0 | – | 12 | 0 | ||||
| Cerezo Osaka | 2012 | J1 League | 9 | 2 | 4 | 0 | 2 | 0 | – | 15 | 2 | ||
| 2013 | 11 | 1 | 3 | 0 | 3 | 0 | – | 17 | 1 | ||||
| Omiya Ardija | 2014 | J1 League | 21 | 0 | 1 | 0 | 4 | 0 | – | 26 | 0 | ||
| 2015 | J2 League | 41 | 3 | 1 | 0 | – | – | 42 | 3 | ||||
| 2016 | J1 League | 19 | 1 | 3 | 0 | 4 | 0 | – | 26 | 1 | |||
| Hokkaido Consadole Sapporo | 2017 | J1 League | 26 | 2 | 0 | 0 | 4 | 0 | – | 30 | 2 | ||
| 2018 | 0 | 0 | 0 | 0 | 4 | 0 | – | 4 | 0 | ||||
| Roasso Kumamoto (loan) | 2018 | J2 League | 7 | 0 | – | – | – | 7 | 0 | ||||
| FC Gifu | 2019 | J2 League | 0 | 0 | – | – | – | 0 | 0 | ||||
| Career total | 210 | 10 | 19 | 0 | 31 | 1 | 11 | 0 | 271 | 11 | |||