John A. Lynch (October 11, 1882 – March 9, 1954) was an American businessman and politician from New York.
In 1903, at the age of 21, he began working in the insurance and real estate business and incorporated the John A. Lynch Company.
He also spurred an extensive amount of construction and development in the borough, and oversaw industrial growth and a population boom.
Although the case against him blew over, in 1933 he lost the nomination for his re-election thanks to the efforts of Democratic leader David S. Rendt, a previously close associate he broke with in 1929.
In 1938, he worked as a stenographer for Queens Borough President George U. Harvey to qualify for a city pension.