A cleaning element, in particular for brooms or brushes, comprises: a plurality of bundles (4) of fibres (3), a fastening element (5) attached to each bundle (4) to hold the relative fibres (3), a support (2) for the bundles (4) which has an inner cavity (7) designed to house the fastening elements (5) and a plurality of holes (7) for the passage of the fastening elements (6) and the relative bundles (4); the support (2) comprises a first, outer body (10) and a second, inner body (11), the latter having a substantially 'L'-shaped cross-section and being inserted in the first body (10) according to a direction (D) perpendicular to the direction of longitudinal extension (D1) of the holes (7); the cleaning element having parts (23) for connecting the first body and the second body (10, 11).