1. Walt Disney: While not the official "voice" in the way we think of it today, Walt Disney himself provided the voice of Mickey in the early years, from 1928 to 1947.
2. Jiminy Cricket: Although not Mickey, this was a very recognizable voice, Jiminy Cricket, voiced by Cliff Edwards, was often featured alongside Mickey Mouse in films like "Pinocchio" and "Fantasia."
3. Wayne Allwine: The most well-known voice of Mickey, Wayne Allwine, provided the iconic voice from 1977 until his passing in 2009. He also worked alongside Walt Disney during his time.
Let me know if you'd like to know more about these voice actors!