One of the things I found in my luggage when I returned from our 20-day trip to France was a listing of weekly markets in southern Alsace, given to me by the Eguisheim TI. It's a bit different from what's in the 2014 France book, so I thought it worth posting:
Colmar
Thursday morning (Place Ancienne Douane)
Saturday morning (Place St. Joseph)
Turckheim
Friday morning from 7h to 13h
Munster
Tuesday and Thursday morning from 7h to 12h
Kaysersberg
Monday from 8h to 12h (Place Gouraud)
Friday from 16h30 to 19h farmer's market (parking porte basse) from late April to late November
Riquewihr
Friday morning from 8h to 12h
Ribeauville Saturday morning from 8h to 12h
Rouffach
Saturday morning from 7h to 12h (Place de la Republique)
Wednesday from 17h to 19h organic market (Place de la Republique)
Guebwiller
Tuesday and Friday morning (Place de l'Hotel de Ville - centre-ville)
Soultz
Wednesday morning (dans le Hall proche de la mairie)