Nobuyuki Hiyama (檜山修之 Hiyama Nobuyuki, born August 25, 1967 in Hatsukaichi, Hiroshima, Japan) is a Japanese voice actor.
Hiyama's vocal register is described as a husky tenor suitable for voicing mature, young adult men. Combined with an impactful execution, he earned his reputation in voicing heroic protagonists commonly found in works of the mecha, fighting, and fantasy genres.
In the Soulcalibur series, Hiyama is the Japanese voice of Siegfried in every game of the series. His other roles of in the series are Nightmare and Yoshimitsu.
Hiyama is also the voice of Link.