Are oil and margarine the two most common fats used to make pie crust?

Oil and margarine are common fats used in pie crusts, but they are not necessarily the two most common. Butter is typically the most popular fat for traditional pie crusts due to its flavor and ability to create a flaky texture. Some recipes may use shortening or a combination of fats, including butter and margarine, to achieve desired results. Ultimately, the choice of fat can vary based on personal preference and specific recipes.