- For the character of the same name, see Yuka.
Yuka Koyama (小山 裕香 Koyama Yuka), born February 9, 1968, in Hiroshima, Hiroshima Prefecture, is the Japanese voice actor of Eiko from ep. 19 of the Azumanga Daioh anime. She has also appeared in One Piece, Dragon Ball Z, and a few games. Her blood type is A.