Stack is a surname. Notable people with the surname include:
Aindrias Stack (born 1978), Irish actor and musician
Anthony Stack (born 1961), Canadian general
Balaram Stack (born 1991), American surfer
Brennan Stack (born 1988), Australian rules footballer
Brian Stack (born 1967), American actor, comedian and writer
Brian P. Stack (born 1966), American politician
Charles Stack (disambiguation), multiple people
Chelle Stack (born 1973), American gymnast
Chris Stack, American actor
Edward W. Stack, American businessman
Frank Stack (born 1937), American cartoonist
George Stack (born 1946), Welsh Roman Catholic archbishop
Graham Stack (disambiguation), multiple people
Jack Stack, American businessman
James S. Stack (1852-1920), American politician
Jim Stack, American basketball executive
Jonathan Stack (born 1957), American documentary filmmaker
Joseph Stack, American who flew an aircraft into an Austin, Texas building to attack the IRS
Kelli Stack (born 1988), American ice hockey player
Michael J. Stack III (born 1963), American politician
Michael R. Stack (born 1955), Navigator and teacher
Peggy Fletcher Stack, American journalist and writer
Phil Stack, Australian musician
Robert Stack (1919–2003), American actor and television host
Ryan Stack (born 1975), American basketball player
Seán Stack (born 1953), Irish hurler
Stephen Stack, Irish Gaelic footballer
Timothy Stack (born 1956), American actor and screenwriter
Tommy Stack (born 1945), Irish jockey
William Stack, American actor
