While some vegetarian versions of Prosciutto exist, vegans do not eat pork or any other meat products and would not consume Prosciutto.  There are many vegan-friendly substitutes for ham, such as tofu, tempeh, and seitan.  These options have a similar texture and flavor to ham but are made from plant-based ingredients. Vegans are typically very aware of all non-dietary ingredients in their food, so they are certain to check for animal products in prosciutto.