Thomas Say (Anglice: Thomas Say Philadelphiae die 27 Iunii 1787 natus; ibidem mortuus die 10 Octobris 1834) fuit zoologiae, entomologiae, malacologiae, carcinologiae et Taxonomiae peritus Americanus.

• 1819-1820 : "Observations on some species of Zoophytes, Shells, &c. principally fossil" in American Journal of Science and Arts vol. 1 pp. 381–387; vol. 2 pp. 34–45 Pars 1 Pars 2 apud Biodiversity Heritage Library
• 1824-1828 : American Entomology, or Descriptions of the Insects of North America. 3 voll. Philadelphiae.
• 1830-1836 : American Conchology, or Descriptions of the Shells of North America Illustrated From Coloured Figures From Original Drawings Executed from Nature. Partes 1 - 6, New Harmony, 1830-1834; Pars 7, Philadelphiae.
• 1859 (Ioannes Ludovicus Le Conte, ed.) : The Complete Writings of Thomas Say on the Entomology of North America 2 voll. Novi Eboraci: Baillière Brothers, 1859

• Categoria:Taxa Say

• Aves quibus nomen ad Thomae Say honorem impositum est
• Insecti quibus nomen ad Thomae Say honorem impositum est
• Pisces quibus nomen ad Thomae Say honorem impositum est
• New Harmony
• Thomas Say in New Harmony
• Collectio entomologica Thomae Say
• Pomacea paludosa (Say, 1829)