All Sim's oldest stock horse association.
| Name | Age | Color | Breed | Gender |
| Cookie Cutter | 2000 | Sorrel Tobiano | Paint | Mare |
| Cookie Love Hearts | 1996 | Bay Roan | Quarter Horse | Mare |
| Cookies Required RL | 2007 | Palomino | Quarter Horse | Mare |
| Cool Break OK | 2012 | Solid Black | Paint | Mare |
| Cool Intenstions | 2012 | Sorrel | Quarter Horse | Stallion |
| Cool Kid | 2015 | Sorrel | Quarter Horse | Stallion |
| Cool Reality SHC | 2008 | Chestnut | Quarter Horse | Mare |
| Cool Supreme | 2015 | Sorrel | Quarter Horse | Stallion |
| Cool Tall Cowgirl RL | 2007 | Palomino Overo | Paint | Mare |
| Cool Tall Strawberry ST | 2008 | Red Roan | Quarter Horse | Mare |
| Cool Tease | 2015 | Bay | Quarter Horse | Mare |
| Cool Your Jets FS | 2011 | Blue Roan | Quarter Horse | Stallion |
| Coolest Sirprize ST | 2006 | Bay | Quarter Horse | Stallion |
| Coolhand Luke | 2005 | Brown | Australian Stock Horse | Stallion |
| Coopers Smokin Diamond | 2006 | Chestnut Tovero | Paint | Mare |
| Coosa Conundrum | 2008 | Sorrel | Quarter Horse | Mare |
| Coosa Faithful Dream | 2016 | Chestnut Leopard | Appaloosa | Mare |
| Coosa's Fancy Footwork | 2001 | Red Roan | Quarter Horse | Mare |
| Coosas Captive | 2003 | Grey | Quarter Horse | Mare |
| Coosas Fineprint | 2009 | Bay Blanket | Colorado Ranger | Stallion |
| CopyCat AE | 1998 | Roan Overo | Paint | Stallion |
| Corkies Cat | 2002 | Bay | Quarter Horse | Mare |
| Count Your Assets | 2000 | Bay | Quarter Horse | Stallion |
| Country Dash FE | 2011 | Brindle | Quarter Horse | Stallion |
| Country Kiss FE | 2014 | Buckskin | Quarter Horse | Gelding |
| Country Time Marmalade | 1994 | Blue Roan Overo | Paint | Mare |
| Country Ways MP | 2008 | Bay Overo | Paint | Mare |
| Covered In Gold | 1996 | Buckskin | Quarter Horse | Mare |
| Cowboys Dream | 2019 | Blue Roan Blanket | Appaloosa | Mare |
| Cowboys Get The Girl | 2011 | grullo tobiano | Paint | Stallion |
| Cowboys N Angels | 2019 | Chestnut | Quarter Horse | Mare |
| Cowboys Remedy | 2005 | Palomino Frame Overo | Paint | Mare |
| CowboysRMyWeakness | 2011 | Palomino Tovero | Paint | Mare |
| Cowgirl In Style RL | 2007 | Cremello | Quarter Horse | Mare |
| Cowgirl Up | 2006 | Dun | Quarter Horse | Mare |
| CowgirlCollectionRLF | 2014 | Red Roan Blanket | Appaloosa | Mare |
| Cowgirls Dont Cry | 2012 | Palomino | Quarter Horse | Mare |
| Cowgirls Double | 2001 | Bay Dun Roan | Quarter Horse | Mare |
| Cowgirls Style | 2008 | Buckskin | Quarter Horse | Mare |
| CowgirlsNeverLieRLF | 2013 | Cremello | Quarter Horse | Mare |
| CowgirlsOnlyParty RL | 2009 | Bay Near Leopard | Appaloosa | Mare |
| Cowper | 2006 | Palomino | Quarter Horse | Gelding |
| Cranked Country Music | 2007 | Bay Tobiano | Paint | Mare |
| Crashin The Cooler RL | 2010 | Sorrel Blanket | Appaloosa | Stallion |
| Crashin The Treats RL | 2004 | Buckskin Blanket | Appaloosa | Stallion |
| Crescendo Betta | 2024 | Red Roan Snowflake | Appaloosa | Mare |
| Crimson Gem | 2024 | Chestnut | Quarter Horse | Stallion |
| Crimson Rose | 2023 | Bay Blanket | Appaloosa | Mare |
| Crimson Superstition | 2013 | Black Tobiano | Paint | Mare |
| Crimsons Cash and Carry | 2015 | Chestnut | Quarter Horse | Stallion |
| Crimsons Duncan | 2012 | Classic Champagne Dun Leopard | Appaloosa | Stallion |
| Crimsons Glown With Envy | 2006 | Buckskin Splash White | Paint | Gelding |
| Crimsons Klassic Whipp | 2012 | Amber Cream Champagne Roan Tobiano | Paint | Stallion |
| Crimsons Murder Mystery | 2015 | Blue Roan Tobiano | Paint | Mare |
| Crimsons Sassy Eagle | 2007 | Red Roan Blanket | Appaloosa | Mare |
| Crimsons Show Time | 2007 | Grullo Blanket | Appaloosa | Stallion |
| Cromed Out Tari | 2011 | bay | Quarter Horse | Stallion |
| Cruise With Me FS | 2004 | Bay | Quarter Horse | Mare |
| Cruisin Bright | 2013 | Chestnut Blanket | Appaloosa | Mare |
| Crushin Spooks R | 2016 | Buckskin Tobiano | Paint | Stallion |
| Cry Just A Little | 2005 | palomino | Quarter Horse | Mare |
| Cry Mercy | 2004 | Palomino | Quarter Horse | Stallion |
| Crystal Comet | 1997 | Black | Quarter Horse | Mare |
| CU Larkin Olena | 2000 | Bay | Quarter Horse | Mare |
| Cupcake Polka | 2024 | Red Dun Fewspot | Appaloosa | Stallion |
| Custom Cat Dual | 2012 | chestnut | Quarter Horse | Stallion |
| Custom Cat Wv | 2008 | Black | Quarter Horse | Mare |
| Custom Cielo | 2003 | Sorrel | Quarter Horse | Stallion |
| Custom Gold Chrome RL | 2003 | Palomino | Quarter Horse | Stallion |
| Custom Gold Sparkle RL | 2008 | Buckskin | Quarter Horse | Mare |
| Custom Guns FS | 2008 | Grey Roan | Quarter Horse | Mare |
| Custom Hot Rod RLF | 2014 | Buckskin | Quarter Horse | Stallion |
| Custom Invitation E | 2012 | Grey | Quarter Horse | Mare |
| Custom Moonlight RL | 2010 | Bay Overo | Paint | Mare |
| Custom Olen FS | 2008 | Black | Quarter Horse | Stallion |
| Customized Pearls RL | 2009 | Grey | Quarter Horse | Mare |
| Cut off a Bit | 2009 | bay | Quarter Horse | Mare |
| Cutting Corners | 2009 | Chestnut | Quarter Horse | Gelding |
| Cuz Ima Gold Diva FS | 2009 | Buckskin | Quarter Horse | Mare |
| Daila Quick Spot | 2000 | Grulla Blanket | Appaloosa | Mare |
| Dakota Dreamcatcher | 2026 | Chestnut Overo | Paint | Mare |
| Dallas Morning News | 2008 | Bay | Quarter Horse | Stallion |
| Damsel In Distress FS | 2007 | Smoky Grulla | Quarter Horse | Mare |
| Dan Dee Doll | 1997 | Bay Blanket | Appaloosa | Mare |
| Dance The Tempo FS | 2005 | Bay Tobiano | Paint | Mare |
| Dancin N Dirty HiSocks R | 2021 | Blue Roan Blanket | Appaloosa | Mare |
| Dancing Annie | 2005 | Chestnut Blanket | Colorado Ranger | Mare |
| Dancing On Clouds ZPE | 1999 | Palomino Tobiano | Paint | Mare |
| Dandee Charlie | 1999 | Chestnut Blanket Splash | Appaloosa | Stallion |
| Dandy Little Chic GE | 2013 | Chestnut | Quarter Horse | Mare |
| Dandy Little Playgirl GE | 2008 | Bay Roan | Quarter Horse | Mare |
| Dandy Star ZPE | 2000 | Dun Blanket | Appaloosa | Stallion |
| Dandy Superstition K | 2023 | Black Tovero | Paint | Mare |
| Dang Docs Dangerous | 2009 | Grullo | Quarter Horse | Stallion |
| Dark Fire of Revolution CYR | 2019 | Dark Bay | Quarter Horse | Mare |
| Dark Gold Rum ZPE | 1999 | Buckskin | Quarter Horse | Stallion |
| Dark Intentions AE | 2004 | Grey | Quarter Horse | Stallion |
| DarkSatin Dreamer | 1996 | Bay Blanket | Appaloosa | Stallion |
| Darlin Chick | 2001 | Grey | Quarter Horse | Mare |
| Darling Little Crystal | 2003 | Grulla | Quarter Horse | Mare |
| Dash Ta Jet | 2012 | Palomino | Quarter Horse | Stallion |
| Dasha Southern Comfort R | 2014 | Bay | Quarter Horse | Stallion |
| Dasharig | 2014 | Chestnut | Quarter Horse | Mare |
| Dashforaglass SF | 2018 | Black | Quarter Horse | Mare |
| Dashin Cowgirl | 2007 | Grey | Quarter Horse | Mare |
| Dashin Firefly FS | 2006 | Palomino Roan | Quarter Horse | Mare |
| Dashin Gin Tonic | 2002 | Black | Quarter Horse | Stallion |
| Dashin Red | 2002 | Red Roan | Quarter Horse | Mare |
| Dashin Universe OK | 2017 | Bay Tovero | Paint | Stallion |
| Dashing Fox FS | 2011 | Bay Tobiano | Paint | Stallion |
| Dashing Minister OK | 2017 | Solid Black | Appaloosa | Stallion |
| Dashing Through Frost | 2011 | Palomino | Quarter Horse | Mare |
| Dashing Thru The Sno | 1999 | Bay Tobiano | Paint | Stallion |
| Daughter O Heaven | 1992 | Red Roan | Quarter Horse | Mare |
| Daughter Of The Wind | 2015 | Bay Tovero | Paint | Mare |
| Dawn of Destiny OK | 2020 | Bay Tovero | Paint | Stallion |
| Dawned On Copper | 2011 | Palomino Roan Blanket | Appaloosa | Gelding |
| Dawned On Me ZPE | 2005 | Palomino Snowcap | Appaloosa | Mare |
| DC Dancin Ontha Bar | 2008 | Buckskin | Quarter Horse | Mare |
| DC Hez Hollywood Hot | 2008 | Buckskin Tobiano | Paint | Stallion |
| DC Not Dun Sonny | 2008 | Grulla | Quarter Horse | Stallion |
| DC Smokin But Batty | 2001 | Buckskin | Quarter Horse | Mare |
| Deacons Ivory Doll | 2001 | Cremello | Quarter Horse | Mare |
| Deacons Spark O Fame Wv | 2007 | Perlino | Quarter Horse | Stallion |
| Deacons Spark SO | 1996 | Palomino | Quarter Horse | Stallion |
| Deal Only In Chips RLF | 2013 | Bay Dun | Quarter Horse | Stallion |
| Dealin Aces R | 2015 | Bay Leopard | Appaloosa | Mare |
| Dealing With Charisma | 1997 | Chestnut Leopard | Paint Pony | Mare |
| Death is just a Feeling | 2004 | perlino | Quarter Horse | Stallion |
| Decks Rusty Lena | 2003 | Bay | Quarter Horse | Mare |
| Dee Big Time Zip | 2012 | Sorrel Overo | Paint | Mare |
| Dee Dust Bar | 2006 | Amber Champagne Dun Tobiano | Paint | Stallion |
| Definitely Hot | 2010 | Chestnut | Quarter Horse | Mare |
| Delightful Dimension ST | 2003 | Chestnut | Quarter Horse | Mare |
| Deluxe Investment ZPE | 1999 | Palomino | Quarter Horse | Mare |
| Denbighshire QHA | 2025 | Black | Quarter Horse | Stallion |
| Denied Invitation | 2009 | Bay Tobiano | Paint | Stallion |
| Denver Tuf Wv | 2011 | Buckskin Roan | Quarter Horse | Stallion |
| Derek of the Dominos FS | 2005 | Black Overo | Paint | Stallion |
| Designed By Blue RL | 2012 | Bay Blanket | Appaloosa | Mare |
| Desire Me Boo GE | 2013 | Blue Roan | Quarter Horse | Mare |
| Dessert Glory WSS | 2009 | Grey | Quarter Horse | Stallion |
| Destiny AES | 2008 | Bay | Australian Stock Horse | Mare |
| Destiny for Gamble OK | 2012 | Red Dun Overo | Paint | Stallion |
| Destinys Gold | 2010 | Palomino | Mustang | Mare |
| Deuce In Honey | 2008 | Palomino | Quarter Horse | Mare |
| Deuce Onfire | 2007 | Dunalino | Quarter Horse | Stallion |
| Deuce Red | 2008 | Palomino | Quarter Horse | Stallion |
| Deuces Chance FS | 2010 | Bay | Quarter Horse | Mare |
| Devil In The Pleasantrys SF | 2013 | Chestnut Sabino | Paint | Stallion |