Here are a few from a mostly jazz perspective.
Roy Dunann - Contemporary Records. In my opinion the best who ever lived. He is the guy who figured out how to properly mic and record in stereo.
Al Schmitt - Another great engineer. He did a lot of work for RCA, later Capitol, and was instrumental in Diana Krall's recording success.
Val Valentin = Verve
Tom Dowd - Atlantc
Ebonie Smith - Atlantc, proving it is not for men only
Bill Smith - Capitol
That is just the tip of the iceberg.
