<p>In this study, the dynamic characterization of MWCNT-filled GFRP hybrid honeycomb cores embedded tapered sandwich composite plates was investigated by formulating finite element problem using higher-order shear deformation theory (HSDT) with nine-noded elements since the multifunctional MWCNT and proposed various honeycomb cores offer variation in stiffness and modal damping and validated through experimental testing and comparison with existing literature. A detailed parametric study was performed to analyse the influence of MWCNT content in both skins and core, along with various taper configurations (TC1, TC2 and TC3) and honeycomb configurations (HC1, HC2, HC3 and HC4) on dynamic characteristics including natural frequencies, modal damping factors and root-mean-square (RMS) velocities. The fundamental frequencies of the sandwich plates with MWCNT in the core layer are 9.97%, 10.60% and 8.16% higher than that of the plate without MWCNT in both the core and skin layers. Additionally, when the MWCNT weight fraction in the skin layer increases from 0 to 0.1%, the primary natural frequency of the sandwich plate increases by 16.31%, 17.50% and 15.88% compared to the plate without MWCNT. Further, it was found from the analysis that in TC3 with HC2 and HC1 yield maximum natural frequency and minimum for TC1 and TC2 with HC4 at mode (1,1), respectively. It was also found that maximum natural frequencies were yielded for the combinations of TC3 and HC2 and HC1, whereas minimum for combinations of TC1 and TC2 and HC4. Likewise, in mode (3,1) for the TC3 with HC2 and HC3 the natural frequencies were found to be maximum and minimum for the TC1 and TC2 with HC4 in core. It can be concluded from the study that MWCNT-GFRP hybrid honeycomb core sandwich tapered composite plates have great flexibility in terms of honeycomb core and MWCNT to tailor the structural dynamic properties in the direction-wise as per the design requirements.</p>