List of Famous people who are 51

Hiroshi Kobayashi is a retired Japanese professional pitcher, who currently coaches for Orix Buffaloes.

Christopher Cornelius Byrd is an American former professional boxer who competed from 1993 to 2009. He is a two-time world heavyweight champion, having first won the WBO title in 2000 after an upset corner stoppage over then-undefeated Vitali Klitschko. In his first title defense later that year, he lost to Vitali's brother Wladimir Klitschko. In 2002, Byrd defeated Evander Holyfield to win the IBF heavyweight title for his second reign as world champion. He made four successful defenses until losing his title again to Wladimir Klitschko in a 2006 rematch. He was ranked by BoxRec as the world's top 10 heavyweight from 1996 to 2003, reaching his highest ranking of No.4 in 1998, and his victorious fights over David Tua and Vitali Klitschko were awarded a 5-Star rating.

Ümit Sayın is a Turkish pop singer, composer and songwriter. Singer-songwriter Sezen Aksu, who was impressed by his voice at a concert in İzmir on 8 September 1990, and after performing a duet with him, she hired him as her backing vocalist. Sayın later worked as a backing vocalist for Harun Kolçak in 1992, Ajda Pekkan in 1993 and Tarkan in 1994–95. He began to write and compose songs in 1991 with the encouragement of Özkan Uğur and soon started to make songs for singers such as Harun Kolçak, Deniz Arcak, Emel Müftüoğlu, Erdal Çelik, Seden Gürel, Leman Sam, Hakan Peker, Burak Kut, İzel, Yeşim Salkım, Pınar Aylin, Suavi, Bendeniz, Tarkan, and Zeynep Dizdar. He continued his career successfully thanks to his musical relationship with Ozan Çolakoğlu. He released his self-titled debut album in 1992.

Macarena Santos i Torres, is a Spanish writer who writes under the name "Care Santos". She writes in both Catalan and Spanish languages, for both young and adult readers.

Miki Nagasawa is a Japanese voice actress. She was raised in Fukushima. Formerly affiliated for Haikyo, she is affiliated with Atomic Monkey. On anime roles, she played the eponymous character in Vampire Princess Miyu, Wedy in Death Note and Maya Ibuki in Neon Genesis Evangelion. In video games, she played Shelinda in Final Fantasy X and X-2, Kuyo in Genji: Dawn of the Samurai, Karin in Shadow Hearts 2, and Sleigh Presty in Super Robot Wars. Nagasawa attended Nan Desu Kan in 2009.

Kazuhiro Soda is a Japanese documentary filmmaker and author based in New York City, USA. He is known for his observational method of documentary filmmaking.

Che Feng is a Chinese business mogul and the son-in-law of former People's Bank of China governor Dai Xianglong. He is currently under investigation by the authorities, suspected of corruption.

Amanda Lee Wai-man is a Hong Kong pop singer and actress.

Gao Min is a female Chinese diver who won gold medals in the springboard event of the 1988 and 1992 Olympic Games.

Mondher Kebaier is a Tunisian football coach who is currently manager of Tunisia.