John Peter Alevizos (December 11, 1919 – August 1, 2005) was an American businessman and a front-office executive in professional baseball. A native of Boston, Massachusetts, he was a real-estate developer for over forty years and a former member of the faculty of the Boston University School of Management. In 2004, Alevizos, then 84, made headlines when he proposed to buy the MLB-owned Montreal Expos franchise with the intent to move them to Connecticut. Instead, the Expos relocated to Washington, D.C., where they now play as the Washington Nationals.