Bolshiye Koty (Russian: Больши́е Ко́ты) is a rural locality (a settlement) in Irkutsk Oblast, Russia situated on the western shore of Lake Baikal, 18 kilometers (11 mi) to the northeast of Listvyanka.
The history of the settlement is closely tied to the beginning of gold mining near Baikal in 1842.
According to the dictionary by Vladimir Dal, "koty" means a trap for fish installed at the mouth of a river.
The Bolshiye Koty River runs near the settlement and into Lake Baikal.
The settlement is accessible during the summer by ferry from Irkutsk or Listvyanka and in the winter via roads across the ice on the lake.