William Teel Baird (c. 1819 – February 23, 1897) was a Canadian military figure of the 19th century.
The younger Baird was trained as a pharmacist and in 1839 he moved to Woodstock to open his own business.
His first interest was the militia, which he had joined in Fredericton, New Brunswick in 1836, and he continued with this pursuit in his new home.
Under instructions from Lieutenant Governor Arthur Hamilton Gordon, he organized the Home Guard during the time of the threat of Fenian raids.
William Teel Baird's other noteworthy contribution to history was his autobiography, Seventy years of New Brunswick life, which gives a particular insight into the militia and the political climate of the times.