Roch-Ambroise Cucurron Sicard (20 September 1742 - 10 May 1822) was a French abbé and instructor of the deaf.
Born at Le Fousseret, Haute-Garonne, and educated as a priest, Sicard was made principal of a school for the deaf at Bordeaux in 1786, and in 1789, on the death of the Abbé de l'Épée, succeeded him at Paris. He met Thomas Hopkins Gallaudet while traveling in England and invited Gallaudet to visit the famous school for the deaf in Paris.
Sicard's chief works were his Eléments de grammaire générale (1799), Cours d'instruction d'un sourd-muet de naissance (1800) and Traité des signes pour l'instruction des sourds-muets (1808). The Abbé Sicard managed to escape any serious harm in the political troubles of 1792, and became a member of the Institute in 1795, but the value of his educational work was hardly recognized till shortly before his death at Paris.
In 1803 he became a member of the Académie française, occupying Seat 3 as the successor to the François-Joachim de Pierre de Bernis, who was a diplomat.