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HD 327083 is a luminous B type star which exhibits emission lines and aninfrared excess and is therefore classified as a supergiant B[e] star. Inaddition, the star is the primary of a close binary system. It is not clearwhether the B[e] behaviour of HD 327083 is related to its binarity or itsevolutionary state. Here we address this issue by studying its circumstellarenvironment with high spatial resolution. To this end, we have observed HD327083 with the VLTI and AMBER in the medium resolution K-band setting. 13CObandhead emission is detected, confirming HD 327083 is a post-main sequenceobject. The observations spatially resolve the source of the NIR continuum andthe Br-gamma and CO line emission. In addition, differential phase measurementsallow us to probe the origin of the observed Br-gamma emission with sub-masprecision. Using geometrical models, we find that the visibilities and closurephases suggest that the close binary system is surrounded by a circum-binarydisk. We also find that in the case of the binary HD 327083, the relative sizesof the continuum and Br-gamma emitting regions are different to those of asingle supergiant B[e] star where the standard dual outflow scenario is thoughtto apply. These findings are consistent with the hypothesis that the mass lossof HD 327083 is related to its binary nature.

VLTI/AMBER observations of the binary B[e] supergiant HD 327083