Nam Doh-hyeong is a prominent South Korean voice actor born in Gangneung, South Korea, on April 24, 1983. He began his career after joining the Korean Broadcasting System's voice acting division at the age of 23 and has been active as a freelancer since 2009. He is a graduate of Korea University, where he studied English language and literature.

Nam's voice acting portfolio is extensive, featuring prominently in Korean dubs of Japanese anime and other international animations. He is widely recognized for his breakout role as Natsu Dragneel in the Korean broadcast of the popular anime Fairy Tail. His filmography includes a wide array of characters, such as Hiro Kijima in Anyamaru Tantei Kiruminzū, Shiro Mizunuma in From Up On Poppy Hill, and both Calne Kaiwal and Fiore Folkel in The Legend of the Legendary Heroes. He also voiced Joe Fukairi in Bakkyuu HIT! Crash Bedaman and provided the Korean voice for Dent in Pokémon the Movie: Kyurem VS. The Sword of Justice. Other significant roles include Cricket Green in Big City Greens, King Andrias in Amphibia, Marco Diaz in Star vs. the Forces of Evil, and Rigby in the Korean dub of Regular Show. In the world of tokusatsu, he voiced Gai Ikari in the Korean dub of Kaizoku Sentai Gokaiger.

Beyond animation, Nam's work in dubbing live-action films and series has brought him wide public attention. A pivotal moment early in his career was providing the Korean voice of Jamal Malik in the film Slumdog Millionaire. He is also well-known for voicing Rory Williams in the Korean version of the British science fiction series Doctor Who. His first leading role in a theatrical animated film was as Ted Wiggins in the Korean dub of The Lorax in 2012. He made a brief on-screen appearance as a sports commentator in the 2013 film No Breathing. Nam continues to be an active and versatile presence in South Korean voice acting, with recent roles including Jin Ho Bin in the anime Lookism and the titular character Wanda in the Korean dub of Kamiwaza Wanda.