Podiform chromitites are important indicators of mantle processes associated with subduction initiation, yet their formation mechanisms remain debated. This study presents petrographic and mineral-chemical data from chromitites of the Eastern Ağrı region (Kağızman Ophiolite) in the eastern segment of the İzmir–Ankara–Erzincan Suture Zone and evaluates their significance for supra-subduction zone (SSZ) forearc mantle evolution along the northern Neo-Tethyan margin. The chromitites occur as massive and disseminated bodies hosted by dunite channels within refractory harzburgite. Sharp spinel grain boundaries and primary silicate inclusions (orthopyroxene ± olivine) preserved within Cr-spinel cores indicate focused melt flow, melt–rock interaction, and chromitite saturation in a forearc mantle setting. Cr-spinels are characterized by high Cr# values (0.57–0.88) and low TiO₂ contents (<0.7 wt.%), whereas olivine (Fo_90–93) and orthopyroxene (Mg# = 90–94) compositions indicate a strongly depleted mantle source. Field relationships, petrography, and mineral chemistry suggest that chromitite formation occurred during subduction initiation and was related to slab-derived fluid influx and hydrous melting of refractory mantle. The coexistence of different chromitite textures and preserved primary mineral signatures indicates a multi-stage chromitite-forming process linked to evolving melt fluxes. Comparison with other Neo-Tethyan and global ophiolitic chromitites supports an SSZ affinity for the Kağızman chromitites and highlights the role of integrated petrographic and mineral-chemical approaches in constraining chromitite genesis and forearc mantle evolution.