Title A note on the graph of equivalence classes of zero divisors of a ring Type Presentation Keywords Zero divisor, Annihilator, Associated prime Abstract In this paper we study the graph of equivalence classes of zero divisors of a ring R, denoted by \Gamma_E(R). We give some necessary conditions for finiteness of \Gamma_E(R Researchers hamidreza dorbidi (First researcher)Zahra Abyar (Second researcher)