Pierre Jean Hyacinthe Adonis (or Antoine) Galoppe d'Onquaire (April 16, 1805 (Montdidier) – 9 January 1867 (Le Vésinet)) was a French writer and playwright.
Among his operetta librettos, Jean-Baptiste Weckerlin's setting of La Laitière de Trianon, "opéra de salon en 1 acte" is the best remembered, along with one song Ça fait peur aux oiseaux from the operetta Bredouille, set to music by Paul Bernard (composer).
He was son of Louis-Joseph Hyacinthe Galoppe-Donquaire a merchant draper.
After a brief spell as a military officer he became a writer, under the nickname his father had given him of "Cléon" Galoppe d'Onquaire, and wrote poetry and articles in Mémoires de l'Académie de la Somme.