Sean McDermott (born 1974) is an American football coach.
Sean McDermott or Sean MacDermott may also refer to:
Sean McDermott (basketball) (born 1996), American basketball player Sean McDermott (footballer) (born 1993), Irish association footballer Sean McDermott (long snapper) (born 1976), former American football long snapper Sean McDermott (baseball), baseball coach and shortstop Sean McDermott (rugby union), Irish rugby union player Seán MacDermott or Seán Mac Diarmada (1882–1916), Irish political activist