Who had wives on TV played by Suzanne Pleshette Mary Frann and Carlene Watkins?

You're thinking of the classic sitcom "The Bob Newhart Show".

* Suzanne Pleshette played Emily Hartley, Bob's wife.

* Mary Frann played Carol Kester, Bob's secretary.

* Carlene Watkins played the recurring character, Miss Brimmer, the office's receptionist.

While Mary Frann and Carlene Watkins weren't married to Bob's character, they were significant female characters in the series.