A saltine or soda cracker is a thin, usually square, cracker, made from white flour, sometimes yeast, and baking soda, with most varieties lightly sprinkled with coarse salt. It has perforations over its surface, as well as a distinctively dry and crisp texture.

A cracker is a flat, dry baked biscuit typically made with flour. Flavorings or seasonings, such as salt, herbs, seeds, or cheese, may be added to the dough or sprinkled on top before baking. Crackers are often branded as a nutritious and convenient way to consume a staple food or cereal grain.