Yaku may refer to:
*
Yakushima, Japan (屋久島), which could be referred to as Yaku Island
*
Yaku, Kagoshima, Japan (屋久町), a town on the island of Yakushima in Kagoshima Prefecture
*
Yaku, Nepal
*A specific combination of tiles or cards that increases the value of the player's hand in
Japanese Mahjong or
Koi-Koi
*
Yaku (Haida village), an historical village on Haida Gwaii, British Columbia, Canada
* Yaku Yakusen, a character from
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