The Bergslagen ore province forms part of the Svecofennian domain of the Baltic Shield. The initial ϵ Nd-values of least-altered and albitized granite samples of the 1.88-Ga Bergslagen Older Granite suite vary between −1.2 and +2.5. The granite samples of the 1.78-Ga Fellingsbro-Malingsbo suite vary between −0.3 and +7.7. The Rb-Sr system of the Older Granite suite yields an errorchron of 1.70±0.01 Ga, with an initial 87 Sr 86 Sr ratio of 0.7053, indicating tectonothermal disturbance, perhaps due to the intrusion of younger granites of the Transscandinavian Igneous Belt. The initial Nd isotopic composition of the 1.88-Ga Older Granite suite can be interpreted in two extreme end-member models: (a) interaction between depleted mantle-derived melts and Archaean crustal material at 1.88 Ga; and (b) remelting of Early Proterozoic (pre-1.88 Ga) crust. Previous studies in the Baltic Shield have advocated the former model, and discarded the latter, because of absence of 2.0–2.4-Ga crust. Likewise, in the case of western Bergslagen, no Archaean crust is present. It is hence argued that the Nd isotopic data may also be interpreted in terms of generation of the Older Granite suite through remelting of a crustal precursor. In this case the 2.1-2.0-Ga depleted mantle model ages of the Older Granite suite could give an indication of the time that such a precursor was extracted from the depleted mantle.