- French Poodle
- Miniature Poodle
- Standard Poodle
- Toy Poodle
- Porcelaine
- Portuguese Podengo (Portuguese Podengo)
- Portuguese Pointer
- Portuguese Shepherd Dog - see Cao da Serra de Aires
- Portuguese Water Dog
- Posavac Hound
- Pom-a-poo
- Prague Ratter - see Pražský Krysařík
- Pudelpointer
- Pug
- Puggle (Pug-Beagle cross)
- Pugnaces Britanniae
- Puli
- Pumi
- Pungsan (Poongsan)
- Pyrenean Mastiff
- Pyrenean Mountain Dog
- Pyrenean Shepherd
- Queensland Heeler - see Australian Cattle Dog
- Qimmiq - see Canadian Eskimo Dog
- Rafeiro do Alentejo
- Rajapalayam
- Rampur Greyhound
- Ratonero Bodeguero Andaluz
- Ratonero
- Rat Terrier
- Redbone Coonhound
- Red Setter
- Rhodesian Ridgeback
- Rottweiler
- Rough Collie
- Russian Black Terrier - see Black Russian Terrier
- Russian Harlequin Hound (Russkaja Pegaja)
- Russian Hound
- Russian Spaniel
- Russian Toy Terrier
- Russian Tsvetnaya Bolonka - see Tsvetnaya Bolonka
- Russo-European Laika (Russko-Evropeiskaia Laika)
- Russell Terrier - see also Australian Jack Russell Terrier, Jack Russell Terrier and Parson Russell Terrier
- Ryūkyū Inu
- Saarlooswolfhond
- Sabueso Espanol
- Sage Koochee
- Sakhalin Husky
- Saluki
- Samoyed
- Sanshu
- Santal Hound
- Sapsali
- Šarplaninac
- Schapendoes
- Schillerstovare
- Schipperke
- Schnauzer - divided into Miniature Schnauzer, Standard Schnauzer, Giant Schnauzer, White Schnauzer,
- Schneagle
- Schnoodle
- Schweizer Laufhund
- Schweizer Niederlaufhund
- Scottish Deerhound - see Deerhound
- Scottish Terrier
- Sealyham Terrier
- Segugio Italiano
- Seppala Siberian Sleddog
- Serbian Hound
- Serbian Mountain Hound
- Serbian Tricolour Hound
- Snowfur Longsnout
- Shar Pei
- Shetland Sheepdog (Sheltie)
- Shi-lah
- Shiba Inu
- Shih-poo
- Shih Tzu
- Shikoku
- Shiloh Shepherd Dog
- Shorkie tzu
- Sheepdog
- Scot Dog (Scott Ellis)
- Siberian Husky
- Silken Windhound
- Silky Terrier - see Australian Silky Terrier
- Sindh Mastiff
- Skye Terrier
- Sloughi
- Slovak Cuvac
- Slovakian Hound
- Slovensky Hrubosrsty Stavac (Ohar)
- Smalandsstovare
- Small Greek Domestic Dog - see Meliteo Kinidio
- Small Munsterlander
- Smooth Collie
- Smooth Fox Terrier - see Fox Terrier (Smooth)
- Soft-Coated Wheaten Terrier
- South Russian Ovtcharka
- Spanish Alano - see Alano Español
- Spanish Greyhound - see Galgo Espanol
- Spanish Mastiff
- Spanish Water Dog
- Spinone Italiano
- Spitz - see Spitz for a list of Spitz-type breeds
- Springer Spaniel - see English Springer Spaniel or Welsh Springer Spaniel
- St. Bernard
- Stabyhoun
- Staffordshire Bull Terrier
- Standard Schnauzer
- Stephens Stock (Stephens Cur)
- Styrian Coarse Haired Hound
- Sulimov dog (dog-jackal hybrid)
- Sussex Spaniel
- Swedish Elkhound - see Jämthund
- Swedish Lapphund
- Swedish Vallhund
- Swiss Shorthaired Pinscher
- Tahltan Bear Dog
- Taigan
- Tainaker
- Taiwan Dog - also Formosan
- Tasy
- Tatra Shepherd Dog - see Owczarek Podhalanski
- Tenterfield Terrier
- Tervuren - See Belgian Shepherd Dog (Tervuren)
- Thai Bangkaew Dog
- Thai Hairless Dog
- Thai Ridgeback
- Teddy Roosevelt Terrier
- Telomian
- Tibetan Kyi Apso
- Tibetan Lhasa Apso - see Lhasa Apso
- Tibetan Mastiff
- Tibetan Spaniel
- Tibetan Terrier
- Tornjak
- Tosa
- Toureg Sloughi - See Azawakh
- Toy Bulldog
- Toy Fox Terrier
- Toy Manchester Terrier
- Toy Mi-Ki
- Transylvanian Hound
- Treeing Cur
- Treeing Feist
- Treeing Tennessee Brindle
- Treeing Walker Coonhound
- Tsvetnaya Bolonka
- Tyrolean Hound
- Utonagan
- Valley Bulldog
- Vizsla - see Hungarian Vizsla
- Volpino Italiano
- Vorsteh
- Walker Hound
- Weimaraner
- Welsh Corgi
- Cardigan Welsh Corgi
- Pembroke Welsh Corgi
- Welsh Springer Spaniel
- Welsh Terrier
- West Highland White Terrier
- West Siberian Laika (Zapadno-Sibirskaia Laika)
- Westphalian Dachsbracke
- Wetterhoun
- Whippet
- White Shepherd Dog - see Berger Blanc Suisse
- White Schnauzer
- Winston Olde English Bulldogge
- Wire Fox Terrier - see Fox Terrier (Wire)
- Wirehaired Pointing Griffon
- Xoloitzcuintle - see Mexican Hairless Dog
- Yorkshire Terrier
- Yugoslavian Mountain Hound - see Serbian Mountain Hound
- Yugoslavian Tricolour Hound - see Serbian Tricolour Hound
- Zapadno-Sibirskaia Laika - see West Siberian Laika
