| Abbreviation | Definition |
|---|---|
| SCRR | Second Chance Rottweiler Rescue |
| SD | Sled Dog |
| SD | Started Dog |
| SDCA | Service Dog Certification of America |
| SDCH | Sydney Dogs and Cats Home |
| SDDI | Sheep Dog Drive In |
| SDP | Service Dog Project |
| SDRO | Senior Dog Rescue of Oregon |
| SDTC | Schenectady Dog Training Club |
| SDTC | Spokane Dog Training Club |
| SDVA | Service Dogs For Victims Of Assault |
| SE | Senior Earthdog |
| SFSB | Standard Foxhound Stud Book |
| SFT | Smooth-haired Fox Terrier |
| SGWC | Show Gundog Working Certificate |
| SH | Senior Hunter |
| SIFD | Scent Imprint For Dogs |
| SIRA | Shiba Inu Rescue Association |
| SK9 | Small Canine |
| SKC | Singapore Kennel Club |