| Tukumach'ay | |
| Elevation M: | 5350 |
| Elevation Ref: | [1] |
| Range: | Andes, Paryaqaqa mountain range |
| Location: | Peru, Junín Region |
| Map: | Peru |
| Map Size: | 240 |
| Coordinates: | -11.9192°N -75.9758°W |
| Coordinates Ref: | [2] |
Tukumach'ay or Tuku Mach'ay (Quechua tuku owl, t'uqu a niche in the wall, mach'ay a cave / a niche in the wall,[3] Hispanicized spelling Tucumachay) is a mountain in the Paryaqaqa or Waruchiri mountain range in the Andes of Peru, about 5350m (17,550feet) high. It is situated in the Junín Region, Jauja Province, Canchayllo District. Tukumach'ay lies north-east of the Paryaqaqa, between the mountain Tunshu in the northwest and the lake Qarwaqucha in the southeast.