0_5712 Two-dimensional (2D) magnetic materials attract condensed matter physicist for their pivotal role as a test environment for phase transition theories and as a fruitful playground for the observation of exotic magnetic structures. Here, we study how magnetic order manifest itself in the electronic band structure of gadolinium germanide films obtained by growing multiple 2D GdGe₂ trilayers (TL) on the Ge(111) substrate. Photoemission spectroscopy show that 1 TL is non-magnetic, while the 2 TL thick film displays fingerprints of the antiferromagnetic (AFM) order, with Neel transition temperature of 25 K. In the AFM phase, the top and bottom parts of the valence band at high-symmetry points of the surface Brillouin zone exhibit spin splitting of 100-130 meV. Similar spin splitting is observed also in the 3 TL film. Ab-initio calculations for an optimized structure demonstrate that the ground state of the films is characterized by an in-plane intra-layer ferromagnetic coupling of the Gd magnetic moments and AFM inter-layer coupling. In perspective, the magnetic properties of these GdGe₂ films can be tailored by Fermi level tuning, substitution of Gd with other trivalent rare earths, and stacking with other Ge-based materials.