Étienne Pasquier (7 June 1529 – 1 September 1615) was a French lawyer and man of letters. By his own account he was born in Paris on 7 June 1529, but according to others he was born in 1528. He was called to the Paris bar in 1549.
In 1558 he became very ill by eating poisonous mushrooms and took two years to recover. This compelled him to occupy himself with literary work and in 1560 he published the first book of his Recherches de la France. In 1565, when he was thirty-seven he became famous after giving a speech in which he pleaded the cause of the University of Paris against the Jesuits and won it. Meanwhile he pursued the Recherches steadily and published other miscellaneous work from time to time.
His literary and his legal occupations coincided in a curious fashion at the Grands Jours of Poitiers in 1579. These Grands Jours (an institution which fell into desuetude at the end of the 17th century, with bad effects on the social and political welfare of the French provinces) were a kind of irregular assize in which a commission of the parlement of Paris, selected and dispatched at short notice by the king, had full power to hear and determine all causes, especially those in which seignorial rights had been abused. At the Grands Jours of Poitiers of the date mentioned and at those of Troyes in 1583, Pasquier officiated; and each occasion has left a curious literary memorial of the jests with which he and his colleagues relieved their graver duties. The Poitiers work was the celebrated collection of poems on flea (La Puce de Madame Des Roches, published 1583; see Catherine Des Roches).
In 1585 Pasquier was appointed by Henry III advocate-general at the Paris cours des comptes, an important body having political as well as financial and legal functions. Here he distinguished himself particularly by opposing, sometimes successfully, the system of selling hereditary places and offices. The civil wars forced Pasquier to leave Paris and for some years he lived in Tours, working steadily on his great book, but he returned to Paris in Henry IV's train in March 1594. He continued until 1604 with his work on the chambre des comptes; then he retired. He lived more than ten years in retirement, producing much literary work and died after a few hours' illness on 1 September 1615.