Wank'ayuq Saywa (Quechua wank'a rock, -yuq a suffix to indicate ownership, saywa boundary stone, landmark, Ref Laime "rocky landmark" or "landmark with rocks", Hispanicized spelling Huancayojsayhua, Hiancayojsayhua) is a mountain in the Wansu mountain range in the Andes of Peru, about 5000 meters high.