Desbiens (dai-BYEH) or Saint Emilien (seht-ai-mee-LYEH), town (1991 pop. 1,265), central Que., Canada, on S shore of L. St. John, at mouth of Metabetchouan R., 16 mi/26 km SW of St. Joseph dAlma; 48°25'N 71°57'W. Hydroelectric station; dairying, pig raising.