who voiced the evil queen in snow white
Lucille La Verne.
Evil Queen (Disney)
The film's version of the Queen was created by Walt Disney and Joe Grant, and originally animated by Art Babbitt and voiced by Lucille La Verne. 
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Evil Queen (Disney) [SEP] Introduction
The Queen dies in the film, but lives on in a variety of non-canonical Disney works. The film's version of the Queen was created by Walt Disney and Joe Grant, and originally animated by Art Babbitt and voiced by Lucille La Verne. Inspiration for her design came from the characters of Queen Hash-a-Motep from "She" and Princess Kriemhild from "Die Nibelungen". The Queen has since been voiced by Eleanor Audley, June Foray, Janet Waldo, Eda Reiss Merin, Louise Chamis and Susanne Blakeslee, and was portrayed live by Anne Francine (musical), Jane Curtin (50th anniversary TV special), Olivia Wilde ("Disney Dream Portraits"), and Kathy Najimy ("Descendants").