Matzoh is made with wheat flour, true... not sure how that works (I think it has to do with the preparation? There is some sort of rule regarding how long the wheat and flour can be mixed together and how long it may bake), but in general any thing made for Chometz- wheat, spelt, barley, oats, and rye or legumes (depending on if you are Ashkenazi (European) or Sephardic (Mideastern) descent.