Fully dense zirconia parts were produced by shaping using Fused Deposition Modeling (FDM) and microwave (MW) sintering. The samples were obtained using an usual 3D printer and a commercial 3 mol% yttria-stabilized zirconia filament. The printing parameters were adapted to the printer and the filament. Then, the samples were debinded with a two-step process, i.e., chemical and thermal debinding. The debinded samples were sintered in a multimode microwave instrumented cavity. Full density was achieved with shorter thermal cycles compared with conventional sintering. Dilatometric curves for microwave sintering show similar behavior during densification, as in conventional sintering. The evolution of measured temperature vs time confirms the good control of the thermal cycle allowed by the MW device.