Stephen Wright Kellogg (April 5, 1822, in Shelburne, Massachusetts – January 27, 1904, in Waterbury, Connecticut) was an American politician, attorney, military officer and judge.

First he began to practice in Naugatuck, Connecticut, where he remained until 1854, and then having been elected judge of probate for the district of Waterbury, he removed to that then small city.

From 1866 to 1869, and 1877 to 1883, he was the City Attorney of Waterbury, Connecticut; and until a short time before his death he was constantly occupied in the practice of his profession.

Meantime his active mind and restless energy found congenial occupation in the stirring political events of the times.

Three times he was elected to US Congress from the usually Democratic second district, and his perseverance and success in protecting and advancing both the public and personal interests of his constituents were remarkable.