25 appellations — a b c d e f g h i j k l m n o p q r s t u v w x y z
O Rosal
Oak Knoll District
Oakville
Obidos
Offida
Ogliastra
Ohio
Ohio River Valley
Okanagan Valley
Oklahoma
Old Mission Peninsula
Olifants River Valley
Oltrepo Pavese
Orange
Orcia
Oregon
Orta Nova
Orvietano Rosso
Orvieto
Osco
Ostuni
Otago
Overberg
Ozark Highlands
Ozark Mountain
