Lemercier (English equivalent Taylor) is a common French occupational surname. Notable people with the surname include:
Népomucène Lemercier (1771–1840), French poet and dramatist Pierre Lemercier, (fl 1532–1552), French architect/master mason Nicolas Lemercier, (1541–1637), French architect/master mason Jacques Lemercier (c.1585–1654), French architect and engineer Valérie Lemercier, French actress, director and singer Louis Lemercier de Neuville, French dramatic author and puppeteer Charles Lemercier de Longpré, baron d'Haussez, Minister of the Marine
See also Lemercier, Guadeloupe, a settlement in the commune of Le Moule