Johann Peter de Beaulieu, also Jean Pierre de Beaulieu (born October 26, 1725 in Lathuy, Brabant, Belgium– died December 22, 1819), is a Walloon military officer.

He joins the Austrian army and fights against the Prussians during the Seven Years' War.

A cultured man, he later battles Belgian rebels and earns promotion to general officer.

During the French Revolutionary Wars he fights against the First French Republic and attains high command.

In 1796, a young Napoleon Bonaparte wins some of his first victories against an army led by Beaulieu.

He retires and is the Proprietor (Inhaber) of an Austrian infantry regiment until his death.