Terry Cahill (born 30 April 1958) is a former Australian rules footballer who played with Essendon in the Victorian Football League (VFL).
Cahill was knocked unconscious in a clash with St Kilda's Carl Ditterich in 1978. He retired soon after to become a school principal and retired and moved to Sydney in 2021.
He is the former Principal at Saint Agatha's Primary School in Cranbourne.