* Japanese Name: 中山優馬
* Romaji Name: Nakayama Yuma
* Nickname: Yuma.
* Birthdate: January 13, 1994
* Birthplace: Osaka, Japan
* Blood Type: A
* Height: 173cm
* Weight: 53kg
* Nationality: Japanese
* Occupation: Singer, Idol talent, Actor
* Talent agency: Johnny's Entertainment
Trivia
* Hobby: Fishing, baseball and cooking.* Family: Older sister Yamada Nana (NMB48), formerly Nakayama Nana (SI☆NA)
* Admired Sempai: Kondo Masahiko, Yasuda Shota
* Favorite Manga: "Naruto"
* Favorite Movie: "Umizaru"
* Favorite Color: White
* Favorite food: omurice
* Favorite song: "Murasaki" by Akanishi Jin,"Kan Fu Fighting" by Kanjani8 and "10 Nen Go no Kyo no Hi mo" by Kanjani8
* Nakayama's drama debut at age 14 was in April 2008 when he starred in the NHK dorama Battery, along with fellow Johnny's Jr. Takada Sho and Morimoto Shintaro.
* In June 4th 2009, his debut with the Johnny's Jr. group B.I.Shadow as Nakayama Yuma w/B.I.Shadow was announced.
* In March 2010, Yamada Ryosuke and Chinen Yuuri from Hey! Say! JUMP and Nakayama formed NYC with the debut single Yuuki 100%.
* When he joined Johnny's Entertainment in October 2006, Nakayama, along with two other Kansai Jr. Kamiyama Tomohiro and Fujii Ryusei, formed the Kansai Johnny's Jr. unit TOP Kids.
Solo works
Singles
- 2012: "Glass no Maho" (in NYC's Wonderful Cupid single)
- 2012: "Missing Piece"
Featured works
Magazine Article Regular
- NYC no Kookan Nikki (POTATO)
- Honma no Yuma wa donai ya nen!!! (POTATO)
- NYC no 3 smiles (WINK UP)
- NYC karafuru tamago (MYOJO)
Events
- 2012: Nakayama Yuma Surprise Event at Imperial Theater
Albums
- 2010: Playzon'10 Road to PLAYZONE Original Soundtrack
- 2011: Playzone'11 Song & Danc'n. Original Soundtrack
- 2012: Playzone'12 Song & Danc'n. Original Soundtrack
Video albums
- 2010: Playzone'10 Road to PLAYZONE
- 2011: Playzone'11 Song & Danc'n.
- 2012: Playzone'12 Song & Danc'n.
Drama
- [2008] Battery as Harada Takumi
- [2009] Samurai Tenkousei as Mifune Yuta
- [2009] Koishite Akuma ~Vampire Boy~ as Kuromiya Ruka
- [2010] Hidarime Tantei EYE as Kaito Masaki
- [2011] [Honto ni Atta Kowai Hanashi 2011] as Mikami Shunsuke
- [2012] [Tsubasa yo! Are ga Koi no Hi da!] as Sano Satoshi
- [2012] Piece as Narumi Hikaru
Concerts
- First concert Winter 2006 (December 6-25, 2006, Osaka Sochikuza)
- Hey!Say! JUMP Debut & First Concert Ikinari in Tokyo Dome!(December 22, 2007, Tokyo Dome)
- 2007 Kinga Shinnen Akemashite Omedetou Johnny’s Jr. Dai Shugo (January 2,3,4,6,7, 2007; Hon budokan)
- Kansai Johnny’s Jr. Osaka-jo Hall First Concert (May 6,2007, Osaka-Jo Hall)
- Kansai Johnny’s Jr. Osaka Sochikuza 2007 (August 6-23, 2007, Osaka Sochikuza)
- Johnny’s Jr. Hey Say 07 in Yokohama Arena (September 23&24, 2007, Yokohama Arena)
- Forum Shinkiroku! Johnny’s Jr 1ka 4koen yaru zo! Concert (June 7, 2009, Tokyo Kokusai Forum)
- Kansai Johnny’s Jr. Ume (Yume) Concert 2009(June 18-20, 200)
- Natsu yasumi Johnny’s Jr. Shenin shugo (August 18, 2009, Tokyo Kokusai Forum)
- Kansai Johnny’s Jr. x Masu yade! Zenin shugo! @Osaka Sochizuka 09 (December 21-25, 2009)
- Haru yasumi all Kansai Johnny’s Jr. with Nakayama Yuma in Osaka-Jo Hall(March 28&29, 2010)
- Nenmatsu yangu Tozai utagassen! Tozai Jr. Senbatsu dai shugo 2010 (November 27, 2010, NHK Hall)
- Kansai Johnny’s Jr with Nakayama Yuma 2011 Haru (March 5 – April 9, 2011; 7Toshi)
- Hey! Say! JUMP & Yuuki 100% (March 28- May 29, 2011; 8Toshi)
- Nakayama Yuma with Kansai Johnny's Jr. (november 23, 2012, ORIX Gekijo)
Stage plays
- Playzone 2010: Road to Playzone
- Playzone 2011: Song & Danc'n
- Shinshun Takizawa Kakumei 2011
- Shinshun Takizawa Kakumei 2012
- Playzone 2012: Song & Danc'n Part II.
- Johnny's World
TV commercials
- "Hi-Chew" (2009–2010)
- "Tongari Corn" (2011)
- "Joypolis" (with NYC, 2012)
Radio
- Look at You-Ma, bayfm (July 5-26,2009); July Special program
- Nakayama Yuma no Natsu gasshuku (Nakayama Yuma's summer camp), JFN(August 2009); August Special program
- Nakayama Yuma Radio Catch, JFN (2009–present)
- Gachi・Kin (Interview appearance), ABC Radio (November 23,2012)