Margaret Whittaker Lawrence (August 2, 1889 – June 9, 1929) was an American stage actress known for her performances on Broadway and other venues.

Born in Philadelphia to Mr and Mrs. George Lawrence, Margaret Lawrence began her career in Chicago in 1910, appeared in New York in Over Night (1911) and starred in such Broadway plays as Wedding Bells (1919), Lawful Larceny (1922) and Secrets (1922),[1] the latter of which she was also costume designer.

[2] She was socially prominent, serving on the advisory boards of several charitable organizations.

[3] In 1911 she married Orson D. Munn, publisher of Scientific American, with whom she had two daughters.

Eddinger died in 1929, and on June 9 of that year, Margaret was shot dead by actor Louis Bennison in a murder-suicide.