The F.M. Schaeffer Brewing Company was the longest operating brewery in New York City and the oldest lager beer company in the United States.

It was officially founded in 1842 by two brothers who had immigrated from Wetzler, Prussia, Germany to NYC and brought with them the recipe to a popular lager beer from their hometown. Lager beer was unheard of in America at this time but thanks to the Schaeffer brothers, quickly became the beer of choice for New Yorkers and East Coast Americans. Their headquarters and brewing facilities remained in the city for over a century, and they were the last brewing company to operate in New York until the late 1970s. Their locations include Seventh Avenue and 17th Street (present-day Barneys!) where they stayed briefly and later moved to Park Ave from 50th to 52nd Street.

They remained in their Park Avenue location until the early 20th century. They then moved to Kent Avenue in Brooklyn, where they remained until officially closing their New York plants in 1976. Today, Schaeffer Beer is owned by the Pabst Company, who still brew Schaeffer beer under the Miller Company to this day.