The packing chromatic number Xρ(G) of a connected graph G is the smallest number m for which a function g:V(G) → {1,2,…,m} exists, such that if g(a)=g(b)=j, then d(a,b)>j. Here, we determine the packing chromatic numbers of bismuth tri-iodide and first type nanostar dendrimers. © 2019, Gazi University Eti Mahallesi. All Rights Reserved.