William Baird

William Baird may refer to:


 * William Baird (MP) (1796–1864), Conservative MP for Falkirk Burghs
 * William Baird (physician) (1803–1872), Scottish physician and zoologist
 * William Baird (footballer) (1874–1943), Scottish footballer
 * William Alexander Baird (1867–1940), Ontario lawyer and politician
 * William L. Baird (1843–1916), Massachusetts politician
 * William M. Baird (1862–1931), American Presbyterian missionary
 * William Raimond Baird (1848–1917), publisher of Baird's Manual of American College Fraternities
 * William Teel Baird (1819–1897), New Brunswick historian