Millette Alexander (born August 11, 1933, in New York City) is an American actress and concert pianist, best known for having played Dr. Sara McIntyre Gantry Werner Blackford Thorpe on The Guiding Light from January 1969 to January 1983.

She also is known for her three roles on television's The Edge of Night and for having played Sylvia Hill Suker, R. N. on As the World Turns.

Alexander assumed the role of Dr. Sara McIntyre #3 on the serial The Guiding Light from January 1969 until January 1983, playing the adoptive mother of character T.J. Werner, a role portrayed by T.J. Hargrave (1974–1978) and later by Kevin Bacon (1980–1981), Christopher Marcantel (1981) and finally by Nigel Reed (1981–1982).

Her character was written out of the storyline offscreen when Alexander left the show of her own accord.

And the Toronto Citizen, in a review of the Bach CD hailed them as "surely one of the finest piano duos in the world today."