Sayt'uqucha or Sayt'u Qucha (Quechua suyt'u, sayt'u rectangular, qucha lake, lagoon, "rectangular lake", hispanicized spellings Saitococha, Saytococha) is a lake in Peru located in the Puno Region, Lampa Province, Paratía District. It is situated at a height of about 4,556 metres (14,948 ft), about 3.13 km long and 0.42 km at its widest point. Sayt'uqucha lies between the mountain Yanawara in the northwest and a group of three lakes called Kimsaqucha (Quechua for "three lakes", hispanicized Quimsaccocha) in the southeast.

• Suyt'uqucha
• List of lakes in Peru