Phineas Chapman Lounsbury (January 10, 1841 – June 22, 1925) was an American politician and the 53rd Governor of Connecticut.

[1] In New York City, he secured a position as clerk in a shoe store, and in time familiarized himself with all departments of the business.

When the civil war broke out Lounsbury enlisted as a private in the Seventeenth Connecticut Regiment, but after four months' active service was compelled by severe sickness to return, being honorably discharged and recommended for a pension, which he would not accept.

[2] Having laid the foundations for a successful commercial career; he began, upon attaining his majority in 1862, the manufacture of shoes in New Haven under the firm name of Lounsbury Brothers.

His home, the Phineas Chapman Lounsbury House, was added to the National Register of Historic Places in 1975.