Lalaye is a commune in the southwest of the Bas-Rhin department in Grand Est in north-eastern France. The inhabitants are known as Lachenois. Lalaye is positioned approximately fifteen kilometres to the west-north-west of Sélestat on the departmental road D39, one of a number of minor roads that twists across the Vosges Mountains into Lorraine. It is three kilometres upstream of the town Villé and on the left bank of a branch of the Giessen river which tumbles down from Urbeis to the west-south-west. To the north the commune is bounded by the Honel ridge which continues at an altitude of around 600 meters to the Blanc-Noyer peak which dominates the area. To the south a line of lower peaks running from the Kohlberg to the Goutte Henri a separates the Urbeis Giessen from the "Giessen proper".