Gann Academy (Hebrew: תיכון חדש) is a coeducational Jewish high school located in Waltham, Massachusetts, United States.

[5] Lehman intended for the school to be a place to foster a sense of community among students from different forms and expressions of Judaism.

[6] Gann Academy is a pluralistic day school with students and faculty coming from a number of different denominations of Judaism.

In 2007, Jonathan Golden, chair of the history department, described the school's approach as "a John Dewey-inspired experiment in democratic education.

[11] Gann Academy offers the following in terms of sport: The school's Waltham campus was designed by architect Steve Friedlander.