Janet Elizabeth Smith (born 1950) is an American classicist and philosopher, and professor of moral theology at the Sacred Heart Major Seminary in Detroit, Michigan.
Smith studied Classics at Grinnell College, earning the B.A. degree in 1972. She also received the M.A. in Classical Languages at the University of North Carolina in 1975, and the Ph.D. at the University of Toronto in 1982. Her doctoral dissertation, under the supervision of Timothy Barnes, was titled "Plato's Use of Myth as a Pedagogical Device".
After completing her doctorate, Smith taught philosophy for nine years at the University of Notre Dame in the program of Liberal Studies. She went on to teach philosophy for twelve years at the University of Dallas, where she received tenure.
After a visiting professorship in life issues at Sacred Heart Major Seminary in Detroit and simultaneously a visiting professorship in philosophy at Ave Maria College in Ypsilanti, Michigan, Smith was hired by Sacred Heart Major Seminary in 2001. As of 2016 she holds the Father Michael J. McGivney Chair in Life Issues.
Smith has served agencies of the Holy See in various capacities, longest as a consultor to the Pontifical Council for the Family.
From 1989 to 1994 Smith served the Congregation for Religious and Secular Institutes as an appointed member of an investigative commission into the publications of Sr. Jeannine Gramick and Fr. Robert Nugent on pastoral care for homosexual persons.