<p>Let <i>G</i> be a connected graph. The resistance distance between any two vertices of <i>G</i> is equal to the effective resistance between them in the corresponding electrical network constructed from <i>G</i> by replacing each edge with a unit resistor. The Kirchhoff index of <i>G</i> is defined as the sum of the resistance distances between all pairs of vertices. In this paper, we consider the hexagonal subdivision of graph <i>G</i>, with the resulted graphs being denoted by <i>H</i>(<i>G</i>). Using algebraic and combinatorial methods, we derive explicit formulae for the resistance distances and Kirchhoffian graph invariants (i.e., Kirchhoff index, multiplicative degree-Kirchhoff index, additive degree-Kirchhoff index) of <i>H</i>(<i>G</i>). It turns out that the resistance distances of <i>H</i>(<i>G</i>) could be expressed in terms of the resistance distances of <i>G</i>, and the Kirchhoffian graph invariants of <i>H</i>(<i>G</i>) could be expressed in terms of the Kirchhoffian graph invariants and parameters of <i>G</i>. Finally, the formulaes for these graph invariants of iterated hexagonal subdivision of graphs are obtained.</p>