The Oakton Classic is an annual invitational high school marching band competition held at Oakton High School in Vienna, Virginia. The 32nd Annual Oakton Classic will be held on October 21, 2017. The George Mason University Green Machine and the Oakton High School Marching Cougars will be the exhibition bands this year. October 2, 2004, was named "Oakton Classic Day" in Fairfax County, Virginia in honor of the 20th anniversary of this competition.