Lake Mogotoyevo (Russian: Моготоево озеро; Yakut: Моҕотой Күөлэ, romanized: Moğotoy Küöle) is a coastal lake in Allaikhovsky District, Sakha Republic, Russia.

With an area of 323 km2 (125 sq mi), it is the largest coastal lagoon in the Yana-Indigirka Lowland[1] the lake freezes in the second half of September and melts in June.

[2] The Bogdashkina river mouth lies to the west of the lake and Gusinaya Bay to the southeast.

[3][4] In the lake, large numbers of omul, Siberian ryapushka and nelma can be found.

[5] It is a breeding place for the Siberian crane (Grus leucogeranus).