Tuco may refer to:
- Mauricio Alfaro, a Salvadoran footballer and coach.
- Tuco Ramirez, a character played by Eli Wallach in the 1966 Italian film The Good, the Bad and the Ugly
- Tuco Salamanca, a character in the American television series Breaking Bad
- Tuco (mountain), a summit in the mountain range Cordillera Blanca, Peru
Tuco (hispanicized spelling of quechua name) Tuku ( Quechua for owl,) or Wanaku Punta (Quechua wanaku guanaco, punta peak, ridge; first, before, in front of, hispanicized Huanaco Punta) is a mountain in the Andes in South America. Its summit is ) high and it is one of the southernmost peaks in the snow-capped Cordillera Blanca in northwestern central Peru. Tuco is located in the Ancash Region, Bolognesi Province, Aquia District and in the Recuay Province, Catac District. It is situated northeast of Qiwllarahu, between Challwa in the west and Pastu Ruri in the east.
Other neighboring peaks are K'uchurahu ("edge mountain with snow", Juchuraju) and Santun . Rahu Kutaq (Rahut'una) is the only peak further south in the Cordillera Blanca.
The glacial lakes on the southern flank of Tuku are the source of the Tuku River which flows to the south along the villages of Tuku (Tuco) and Tuku Mach'ay ("owl cave", Tuco Macray) to a lake named Awashqucha (Ahuashcocha) and then southwest to Quñuqqucha. With a length of Tuku River is the main tributary of Quñuqqucha. From there the Santa River flows along the Cordillera Blanca into the Pacific Ocean.