Margaret Louise Plunkett (April 15, 1906 – September 14, 2000) was an American labor economist, government official and diplomat.

She was the first woman accredited to serve in the United States Labor Attaché program, with postings in the Hague (1962 to 1967) and Tel Aviv (1967 to 1972).

[1] She graduated from Corning Northside High School in 1923, attended Elmira College, and completed three degrees, including a PhD in history, at Cornell University.

[6][7] She served on Kennedy's Presidential Committee on Youth Employment before she was appointed labor attaché in 1962.

"[11] Plunkett was also a serious amateur archaeologist, and during the 1950s she spent time in the Middle East pursuing this interest, at sites in Egypt, Turkey, Greece, Israel and Jordan.