John G. Althouse Middle School (JGA) is a middle school located in the Etobicoke area of Toronto, Ontario, near the intersection of Lloyd Manor Road and Princess Margaret Boulevard. Graduates of John G. Althouse mostly go to Martingrove Collegiate Institute, Richview Collegiate Institute, or Etobicoke Collegiate Institute for their secondary education. Historically, graduates have also attended Burnhamthorpe Collegiate Institute.