奥奈达湖（Oneida Lake）是完全位于美国纽约州内面积最大的湖泊。以奥奈达族命名。

面积206.68平方公里，长33公里，阔8.7公里，平均水深6.4公尺，湖岸长89公里。虽然经常被形容为「拇指」，但并不是五指湖的一部份。

地质上是古易洛魁湖的残迹。

Oneida Lake is the largest lake entirely within New York State, with a surface area of 79.8 square miles (207 km). The lake is located northeast of Syracuse and near the Great Lakes. It feeds the Oneida River, a tributary of the Oswego River, which flows into Lake Ontario. From the earliest times until the opening of the Erie Canal in 1825, the lake was part of an important waterway connecting the Atlantic seaboard of North America to the continental interior.