What is Bill Parcells' nickname?

Bill Parcells' nickname is “The Big Tuna.”

The nickname grew from a joke connected to Charlie the Tuna, the advertising mascot for StarKist. While Parcells was coaching linebackers with the New England Patriots, he reportedly responded to an obviously untrue claim by saying, “Who do you think I am, Charlie the Tuna?” Players and others shortened it to “Tuna,” and “The Big Tuna” became the widely recognized version.

Parcells coached 19 NFL seasons as a head coach, leading the New York Giants, New England Patriots, New York Jets and Dallas Cowboys. He became especially famous for rebuilding struggling teams and guiding the Giants to Super Bowl victories after the 1986 and 1990 seasons.

A common mix-up is treating “The Tuna” and “The Big Tuna” as unrelated nicknames; both refer to Parcells, but “The Big Tuna” is the canonical quiz answer. The nickname is not connected to his surname or a formal NFL title.