  We report the magnetocaloric effect (MCE) in a polycrystalline plumbide
sample of $\mathrm{Ho_2Pd_2Pb}$. Arc-melted $\mathrm{Ho_2Pd_2Pb}$ crystallizes
in $\mathrm{Mo_2B_2Fe}$ type of tetragonal crystal structure and shows an
antiferromagnetic behavior with N\'{e}el temperature of 4.5 K. The Arrott plots
indicate that $\mathrm{Ho_2Pd_2Pb}$ undergoes a second-order antiferromagnetic
phase transition. The calculated isothermal magnetic entropy change ($\Delta
S_m$), and relative power cooling (refrigeration capacity) for a change of
field 0-8 T are 17.8 J.kg$^{-1}$.K$^{-1}$, and 680(497)~J.kg$^{-1}$
respectively. The obtained results revealed that $\mathrm{Ho_2Pd_2Pb}$ belongs
to a family of large MCE magnetic materials.
