Informal English name short for doctor, used as a nickname or given name in the American South.
Doc as a given name or near-universal nickname sits at the intersection of American folk culture and the honorific tradition of applying professional titles as terms of affection or respect. The word itself derives from the Latin "docere" (to teach), through "doctor" — which originally meant teacher or learned person before it narrowed to its medical sense. In American vernacular culture, calling someone "Doc" was a form of tribute: it acknowledged intelligence, competence, or the kind of wisdom earned by experience rather than schooling.
The most famous historical Doc is almost certainly John Henry "Doc" Holliday, the Georgian-born dentist and gambler who became one of the West's most mythologized figures, his tuberculosis, his card-playing, and his friendship with Wyatt Earp spinning him into legend at Tombstone. Doc Watson, the North Carolina guitarist, brought the name into music history with a flatpicking style so influential it reshaped American roots music entirely. In children's culture, Doc is one of Snow White's seven dwarfs — the bespectacled, slightly bumbling leader of the group, endearing precisely because he wears his credentials with gentle imprecision.
As an actual given name rather than a nickname, Doc is rare but documented, appearing in American records particularly in rural Southern and Western communities where informal naming culture flourished. It carries an unambiguous character: unpretentious, competent, a little wry. For parents drawn to names that feel genuinely American in the frontier sense — practical, unsentimental, memorable — Doc has a gruff charm that no amount of vintage revival has yet managed to domesticate.