Newfield fields a number of varsity and junior varsity athletic teams, in Section 11, Division 1 of the
New York State Public High School Athletic Association, including baseball, basketball, bowling, cheerleading, cross country, fencing, field hockey, football, golf, gymnastics, lacrosse, swimming, soccer, softball, tennis, track & field, volleyball (girls), and wrestling. Although team uniforms use the school's red and white colors, in the late 1990s, varsity teams began using black as a third color to distinguish from junior varsity. On June 20, 2021, Newfield High Schools varsity baseball team, The Wolverines, won The Suffolk County Baseball championship for the first time. ==Notable alumni==