John A. McGowan was an American politician known for his service in the New York State Assembly. He represented the Democratic Party and was active in local politics during the mid-20th century. His work focused on various issues affecting his constituents, including education and public welfare. McGowan's political career was marked by his commitment to community service and engagement. He played a significant role in shaping policies that aimed to improve the quality of life for residents in his district. His legacy continues to influence local governance and political discourse in New York.