Louis Berger & Co.

Louis Berger & Co. was an architectural firm in Queens, New York active between 1895 and 1930. It was a major local architect of Ridgewood, Queens.

The firm designed most of Ridgewood's row houses and tenement buildings, over 5,000 in number. It also designed Ridgewood's "only extant freestanding mansion", at 66-75 Forest Ave., which was built in 1906, and the Ridgewood National Bank building, later Manufacturers Hanover Trust Bank. Louis Berger was first president of the Ridgewood National Bank.

Berger or the firm designed multiple projects that are listed on the U.S. National Register of Historic Places either individually or as whole or part of a historic district.