Ellis Lake is a lake in geographic Bompas Township,[3] Timiskaming District, in northeastern Ontario, Canada.

[2] The lake is in the James Bay drainage basin.

The nearest community is Sesekinika, 8.5 kilometres (5.3 mi) to the east.

The lake is about 500 metres (1,600 ft) in diameter.

The primary outflow, at the north, is also Sarsfield Creek, which heads north to the adjacent Gould Lake.