The Spanish Water Dog is known by several names that reflect its rich heritage and varied roles throughout history. In its native Spain, this versatile breed is most commonly called the Perro de Agua Español, which translates directly to Spanish Water Dog. This name acknowledges both the breed's country of origin and its historic association with water-related work. The breed has also been called Perro Turco, meaning Turkish Dog, reflecting an early theory about the breed's origins that suggested Turkish traders may have introduced these curly-coated dogs to the Iberian Peninsula. This Turkish connection, while historically debated, remains preserved in the breed's alternate nomenclature.
Another traditional name is Perro de Lanas, which references the wool-like quality of the breed's distinctive curly coat. Spanish shepherds and farmers who worked alongside these dogs for generations developed numerous regional names based on local dialects and the dogs' primary functions. In Andalusia, where the breed was particularly prevalent, they were simply known as water dogs or herding dogs, with the specific terminology varying by province and occupation of the owner.
The abbreviation SWD has become widely adopted in English-speaking countries as a convenient shorthand for Spanish Water Dog, particularly among breed enthusiasts, breeders, and competitors in dog sports. This abbreviation is commonly used in kennel club documentation, breeding records, and informal discussions about the breed. The Spanish Water Dog Club of America, the AKC parent club for the breed, uses SWD interchangeably with the full breed name in their communications and publications.
Historically, three distinct regional populations of the breed existed in Spain, each with somewhat different characteristics and local names. The Marismeño, or marsh dog, was found in the wetlands at the mouth of the Guadalquivir River and was primarily used for waterfowl hunting. The Serrano, meaning sierra dog, inhabited the mountainous regions of southern Andalusia where these dogs excelled at herding in rugged terrain. The Norteño, or northern dog, was found in Cantabria and Asturias along the northern coast, where these smaller, lighter-colored dogs assisted fishermen. In 2011, the northern population was officially recognized as a separate breed called the Cantabrian Water Dog, distinct from the Spanish Water Dog.
The breed's international recognition journey brought additional naming considerations as different kennel clubs adopted their preferred terminology. The Fédération Cynologique Internationale uses the official Spanish designation Perro de Agua Español in their breed standard documentation. The American Kennel Club, United Kennel Club, Canadian Kennel Club, and The Kennel Club in the United Kingdom all recognize the breed under the English name Spanish Water Dog, though they acknowledge the Spanish nomenclature in their breed information materials.

