Mary A. McLaughlin (born 1946) is a United States federal judge.
Born in Philadelphia, Pennsylvania, McLaughlin received a B.A. from Gwynedd-Mercy College in 1968, an M.A. from Bryn Mawr College in 1969, and a J.D. from the University of Pennsylvania Law School in 1976. She was a law clerk, Hon. Stanley Brotman, U.S. District Court for the District of New Jersey from 1976 to 1977. She was a Private practice from 1977 to 1980. She was an assistant U.S. Attorney of the U.S. Attorney's office for the District of Columbia from 1980 to 1984. She was an Assistant professor, Vanderbilt University School of Law from 1984 to 1986. She was in private practice in Philadelphia, PA from 1986 to 2000 and was a partner at Dechert LLP. She was an Adjunct professor, University of Pennsylvania Law School in 1988. She was an Adjunct professor, Rutgers University School of Law in 1989. She was a Chief counsel, Subcommittee on Terrorism, Technology and Government, Committee on the Judiciary, U.S. Senate in 1995.
McLaughlin is a federal judge on the United States District Court for the Eastern District of Pennsylvania. McLaughlin was nominated by President Bill Clinton on March 9, 2000, to a seat vacated by Marvin Katz. She was confirmed by the United States Senate on May 24, 2000, and received her commission on May 31, 2000.