Odessa Lake (French: lac Odessa) is a lake in the municipalities of Kingston and Loyalist in eastern Ontario, Canada.

[1][4][2][5][6] It is in the Lake Ontario drainage basin.

Odessa Lake has an area of 225.67 hectares (557.6 acres)[2] and lies at an elevation of 123 metres (404 ft).

[3] The settlement of Florida lies just northwest of the lake.

The primary inflow, at the northeast, and outflow, at the southwest, is Millhaven Creek, which flows to Lake Ontario.