Up to now there has been little archaeobotanical research on Gallo-Roman graveyards in Belgium. This paper presents the preliminary results of the investigation of the cremation graves of the graveyards at Tienen and Tongeren, dated from the first up to the beginning of the fourth century a.d., and respectively located in the provinces of Vlaams-Brabant and Limburg. The structures studied mainly consisted of pits containing secondary deposits of pyre debris, but a few busta (where cremation took place in situ in or above a pit) could be analysed as well. The results presented here will focus on the most conspicuous finds. The only bustum grave excavated in Tongeren proved to be extremely rich in remains of Lens culinaris (lentil), Vicia faba var. minor (Celtic bean) with some Vicia ervilia (bitter or lentil vetch), concentrated in the presumed area of the head of the deceased. Some of the graves in Tienen, on the other hand, contained some less frequently found taxa, as for example Vitis vinifera (grape), Olea europaea (olive), Pyrus communis (pear), Prunus insititia and/or domestica (plums, in the broad sense) and Cornus sanguinea (dogwood). Most graves however, showed a typical assemblage consisting of mainly pulses and cereals, commonly found in cremation graves. In that respect a certain similarity between both graveyards could be noticed, which is also reflected in the anthropological study.