The school colors are Navy Blue and White, and the mascot is Hank the Harpoon Man, whose name was chosen by the students in 2013.

The school's team's name Whalers is in tribute to the long and storied history of the commercial whaling industry on Nantucket.

[7] There is the skeleton of a juvenile finback whale hanging in the commons area of Nantucket High School that serves as the team's mascot.

Every year, the Nantucket football team plays against Martha's Vineyard for the Island Cup on the weekend before Thanksgiving.

The Nantucket boys' lacrosse team appeared in the state championship game consecutively for over a decade from 1999 onward.