American Bank of Connecticut is a Connecticut state chartered savings bank headquartered in Waterbury, Connecticut. Founded in 1920, the Bank operated as a savings and loan association insured by the Federal Savings and Loan Insurance Corporation until December 30, 1985. On that date, it changed its charter to that of a Connecticut state savings bank, and at the same time the insurance of its deposits was assumed by the Federal Deposit Insurance Corporation (FDIC). The Bank became a public company through the sale of stock in December 1981.

American Bank's market area is comprised of the cities of Waterbury, Torrington and contiguous towns. Its main office and six other offices in Waterbury, plus ten branch offices in Middlebury, Wolcott, Seymour, Torrington, Watertown, Winsted, Southbury and Woodbury, allow the Bank to compete effectively for deposits and loans. Primarily a home mortgage lender, American Bank originates loans almost exclusively for retention in its own portfolio. In addition to retail banking, the Bank also engages in commercial credit, commercial real estate and consumer credit.