Jonathan Blanchard (September 18, 1738 – July 16, 1788) was an American lawyer, farm owner, and statesman from Dunstable, New Hampshire.
His father, the Colonel, was also an active leader in New Hampshire as a judge in the Superior Court and member of the Governor's Council.
That year he married Rebecca Farwell (1739–1811) and they made their home in Dunstable for the rest of their lives.
As New Hampshire moved toward a revolutionary government, Blanchard was elected first to the Provincial Congress in 1775 and then to the state's House of Representatives in 1776.
He was also named as Brigadier General of the state's militia, a position he held until his death.