2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142334An automorphism of a group is said to be normal if it preserves each normal subgroup. In this paper, we determine the normal automorphisms of a free metabelian nilpotent group.16 pages; corrected typos and added reference (the reference of a paper which was "to appear" and is now published)Group Theory20E36; 20F28text