Leopoldo da Gaiche, born Giovanni Croci, was an Italian Roman Catholic priest and a professed member of the Order of Friars Minor who became well known for wearing a crown of thorns. He was a preacher who went from diocese to diocese and served in a position of power in the Franciscan order in the Umbrian region in which he pushed for strong adherence to the Rule of Saint Francis of Assisi. He has been called the "Apostle of Umbria".