Bayard is a French 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 Frank Bayard (1971–), German Catholic priest George Dashiell Bayard (1835–1862), Union Army general in the American Civil War Hippolyte Bayard (1801–1877), French photography pioneer James A. Bayard (politician, born 1767) (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 Bayard (1738–1807), American statesman from Philadelphia, Pennsylvania; delegate to the Continental Congress Louis Bayard (born November 30, 1963), American author Marcel Bayard (1895–1956) French mathematician and prominent telecommunication engineer Mary Temple Bayard (1853–1916), American writer, journalist Nicholas Bayard (–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