Lynn Morley Martin is an American businesswoman and former politician who served as the 21st United States secretary of labor from 1991 to 1993, under President George H. W. Bush. A member of the Republican Party, she previously represented Illinois's 16th congressional district in the United States House of Representatives from 1981 to 1991. Before her election to Congress, Martin served in both chambers of Illinois General Assembly; in the State House of Representatives from 1977 to 1979, as well as the State Senate from 1979 to 1980.

The United States secretary of labor is a member of the Cabinet of the United States, and as the head of the United States Department of Labor, controls the department, and enforces and suggests laws involving unions, the workplace, and all other issues involving any form of business-person controversies.