Bayard is a surname. Notable people with the surname include:
Bayard family, a prominent American family of lawyers and politicians founded by Nicholas Bayard
Alexis I. du Pont Bayard (1918–1985), American politician from Delaware
Émile Bayard (1837-1891), French illustrator
George Dashiell Bayard (1835–1862), Union Army general in the American Civil War
Hippolyte Bayard (1801–1877), French photography pioneer
James A. Bayard (elder) (1767–1815), American politician from Delaware, US representative and senator
James A. Bayard, Jr. (1799–1888), American politician from Delaware, US senator, son of James A. Bayard
Jean-François Bayard (1796–1853), French playwright
John Bubenheim Bayard (1738–1807), American statesman from Philadelphia, Pennsylvania; delegate to the Continental Congress
Nicholas Bayard Nicholas Bayard (c. 1644–1707), 16th mayor of New York, Peter Stuyvesant's brother-in-law, and founder of the Bayard family
Nicholas Bayard (theologian), Dominican theologian
Pierre Bayard (1954–), French author and professor of literature
Pierre Terrail, seigneur de Bayard (Chevalier de Bayard) (1473–1524), French soldier, known as le chevalier sans peur et sans reproche
Richard H. Bayard (1796–1868), American politician from Delaware, mayor of Wilmington and US senator
Samuel Preston Bayard (1908–1997), American folklorist
Stephen Bayard, mayor of New York City from 1744 to 1747
Thomas F. Bayard (1828–1898), American politician, statesman, and senator
Thomas F. Bayard, Jr. (1868–1942), American lawyer and politician, US senator from Delaware
