Haynie
A surname likely developed as a pet or reduced form of names like Hain, Hay, or Hayden.
The #5,438 most common surname in the United States (2010 Census) — about 1 in every 48,241 Americans shares it.
Etymology
Haynie is best understood as an English surname formed as a diminutive or altered form of an earlier personal or family name, probably from Hay, Hain, or a similar medieval name. In this kind of surname, the ending -nie often reflects a familiar or affectionate nickname form that later became hereditary. The name may ultimately connect to a place-name or to a short form of a given name, but the exact pathway is not certain.
History
The surname is found mainly in the English-speaking world, especially in the United States, where it appears to have taken hold through later migration and family-line development. Spelling in this surname group has often been fluid, so Haynie can be related to other forms such as Hain, Hane, or Haines in some lines, though not all families share the same origin. Because the name is relatively uncommon, local family history is often more useful than a single universal derivation.
Origin
Regions
Variant spellings
Fun fact
The -nie ending makes Haynie look almost like a nickname, and in many surname traditions that is exactly how such forms began before becoming fixed family names.