| Bliss | Agoura Hills Chapter of SAI | R11 Registered Quartet | | California |
| By Special Request | Chapter-at-Large Region 11 | R11 Registered Quartet | | |
| Cosmopolitan Quartet | Lady Luck Showtime Chapter of SAI | R11 Registered Quartet | Henderson, NV | Nevada |
| Drastic Measures Quartet | Carpe Diem Chapter of SAI | R11 Registered Quartet | | California |
| Eclectic Mix | Verdugo Hills Chapter of SAI | R11 Registered Quartet | | California |
| Four the Most Part | Agoura Hills Chapter of SAI | R11 Registered Quartet | | California |
| Gin and Tonix Quartet | Golden Sands Chapter of SAI | R11 Registered Quartet | | California |
| Joyful | Celebrity City Chapter of SAI | R11 Registered Quartet | | Nevada |
| Kick It Up Quartet | Voices United Chapter of SAI | R11 Registered Quartet | | California |
| PDQ | Santa Monica Chapter of SAI | R11 Affiliate | | California |
| Precious Gems | Verdugo Hills Chapter of SAI | R11 Registered Quartet | | California |
| Reverb | Chapter-at-Large Region 11 | R11 Affiliate | | |
| Sandpiper Quartet | Golden Sands Chapter of SAI | R11 Registered Quartet | | California |
| Shenanigans Quartet | Antelope Valley Chapter of SAI | R11 Registered Quartet | Antelope Valley | California |
| Sincerely Yours | Chapter-at-Large Region 11 | R11 Registered Quartet | | |
| SoloVoce | Chapter-at-Large Region 11 | R11 Affiliate | | |
| SwingTime | Agoura Hills Chapter of SAI | R11 Registered Quartet | | California |
| The Accidentals | Santa Monica Chapter of SAI | R11 Registered Quartet | | California |
| The Valkyries | Chapter-at-Large Region 11 | R11 Registered Quartet | | |
| Troubadour | Santa Monica Chapter of SAI | R11 Registered Quartet | | California |
| Ultraviolet Quartet | Santa Monica Chapter of SAI | R11 Registered Quartet | | California |
| Up Up & Away | Agoura Hills Chapter of SAI | R11 Registered Quartet | | California |
