Monica Samille Lewinsky (born July 23, 1973) is an American activist. She became internationally known in the late 1990s after U.S. president Bill Clinton admitted to having had an affair with her during her days as a White House intern between 1995 and 1997. The affair and its repercussions (which included Clinton's impeachment) became known as the Clinton–Lewinsky scandal.

Following the scandal, Lewinsky designed a line of handbags under her name, served as an advertising spokesperson for a diet plan, and worked as a television personality. She obtained a master's degree in psychology from the London School of Economics in 2006. In 2014, Lewinsky began speaking out as an activist against cyberbullying.