NLTE abundance corrections for Mn I and Mn II lines. These are computed for a small grid of MARCS model atmospheres representative of dwarfs: T_eff = 6000, log g = 4.0 (top panels),and red giants: T_eff = 4500, log g = 1.5 (bottom panels) for a range of metallicities from 0 to − 3 dex. Different curves represent the corrections derived using two model atoms, one with and the other without collisions derived using the Kaulakys recipe.