A filter element has a filter bellows and at least one support element arranged on the filter bellows that supports the filter element relative to a filter housing in which the filter element is to be arranged. The at least one support element is arranged on at least one edge of the filter bellows and projects outwardly past the filter bellows. The at least one support element is detachably or non-detachably attached on the filter bellows directly or indirectly. The at least one support element is preferably arranged on a corner of the filter bellows and projects past all sides of the filter bellows adjoining the corner. An air filter with a filter housing is furnished with the filter element.