The Smith and Dow Block is a historic apartment house at 1426-70 Elm Street in Manchester, New Hampshire.

When built in 1892, this four-story brick building was the largest apartment block in the state, and it still dominates its section of Elm Street.

It has modest Romanesque styling elements, and was designed by William M. Butterfield, one of Manchester's leading architects, as an investment property for John Butler Smith and Frederick C.

The facade is divided into five identical sections, consisting of rounded bays flanking a central entrance.

Its amenities were at the time a step above those provided in typical apartment houses of the period, including hot and cold running water, sound-deadening walls between the units, and lighting by gas and electricity.