Nicolas-Henry Tardieu (January 18, 1674 - January 27, 1749) was French engraver active in Paris in the late 17th and early 18th centuries. He was a member of the enormous and prolific Tardieu family of engravers. Nicolas-Henry was the fourth son of Nicolas Tardieu and held the title 'graveur ordinaire du roi'. He first studied engraving with M. Le Pautre, an architectural engraver, and then went to the school run by MM. Audran in Lyon. After finishing school, he was retained by Audran for a few years, before returning to Paris, where he began engraving paintings. His work gained him entry into the Royal Academy in 1713. Among Tardieu's children were Jean-Nicolas Tardieu, his son, and Pierre-François Tardieu, his nephew. Tardieu married Louise-Françoise Aveline, also from a family of engravers, in 1706, who had had two children with her late husband. The older of the two, Bernhard Baron, was taught engraving by Tardieu, but unfortunately the younger of the two, Laurent, died as a youth. Louise-Françoise died in 1708 and Tardieu married Marie-Anne Horthemels on October 20, 1712.