Armacost

Armacost is a surname. It is a variant of the Americanized German surname Armagost. Notable people with the surname include:


 * Audrey Mika Armacost (born 2000), American singer and songwriter
 * Austin Armacost (born 1988), American TV personality and model
 * Michael Armacost (born 1937), American diplomat
 * Samuel Armacost (born 1940), American businessman, former CEO of BankAmerica Corporation
 * Wilbur H. Armacost (1893–1971), American mechanical engineer