| Ryohei Yamanaka | |
| Birth Date: | 22 June 1988 |
| Birth Place: | Osaka Prefecture, Japan |
| Height: | 1.88m (06.17feet) |
| Weight: | 950NaN0 |
| School: | Tokai High School |
| University: | Waseda University |
| Position: | Full-Back / Centre |
| Currentclub: | / Kobelco Steelers |
| Years1: | 2013–present |
| Clubs1: | Kobelco Steelers |
| Apps1: | 72 |
| Points1: | 321 |
| Years2: | 2016–2018 |
| Apps2: | 18 |
| Points2: | 5 |
| Repyears1: | 2008 |
| Repteam1: | Japan U20 |
| Repcaps1: | 3 |
| Reppoints1: | 4 |
| Repyears2: | 2010–present |
| Repcaps2: | 18 |
| Reppoints2: | 53 |
| Clubupdate: | 21 February 2021 |
| Repupdate: | 21 February 2021 |
is a Japanese rugby union player who plays as a fly-half or centre.He currently plays for Japanese club Kobelco Steelers. [1] [2]
In 2011, Yamanaka received a 2 year ban from the IRB for rubbing a cream on his upper lip - in an attempt to promote moustache growth - which contained a banned steroid, either methyltestosterone or methandriol.[3]
In his home country he plays for the Kobelco Steelers whom he joined in 2013.[4] [5] He was also named in the first ever squad which will compete in Super Rugby from the 2016 season.[6] Yamanaka is a Japanese international who debuted against the Arabian Gulf in 2010, but did not make the squad for either the 2011 or 2015 Rugby World Cups.[1]
On 19 September 2023, Yamanaka was called up to Japan's Rugby World Cup squad as an injury replacement for Semisi Masirewa.[7] [8]