A&P, MONTVALE, N.J., said Brian Piwek has been appointed vice chairman, president and CEO of A&P Canada. He will report to Michael J. Larkin, senior executive president and chief operating officer of A&P. Piwek was previously vice chairman and co-chief executive officer of the Canadian company. Also, John P. Dunne has been appointed non-executive chairman of A&P Canada. He was previously chairman and co-chief executive officer.