Pierre-Alexandre Tardieu (March 2 1756 - August 3, 1844) was a French portrait and historical engraver of the large Paris-based Tardieu family.The Tardieu family was extremely prolific, with numerous members, for over 200 years, being skilled and active engravers. Most of the Tardieu engravers simply identified themselves as 'Tardieu' or at best with their initials, so it is often extremely difficult to distinguish their individual work. Pierre-Alexandre Tardieu was the son of Pierre-Joseph Tardieu. Pierre-Alexandre was the last of the great masters of the engraving school of the 17th and 18th centuries. He worked for nearly seventy years, and was heralded for the diversity of his works. He was originally a student of his uncle Jacques-Nicolas Tardieu.