The Montreal company said Evans, 58, has been executive vice president. Alcan said he'll take the operating chief post as well and will join the board. Engen, 61, will retire when his contract ends in March. He had been CEO since March 2001.
The company, based in the province of Quebec, said interim finance chief Michael Hanley would become CFO on a full-time basis.
"I am pleased by the board's actions," said Travis Engen. "This new organizational structure keeps a tight focus on execution and allows for an effective future management transition. We have in place a strong and capable management team for both today and tomorrow."
On Wednesday, Alcan was flat at $32.32.