- S'more — Food-Inspired Alpaca Names
- Sable — Names for Black Alpacas
- Sacsay — Place in Peru · Peruvian Place Names for Alpacas
- Saffron — Names for Fawn Alpacas
- Sage — Space & Nature Alpaca Names
- Sahara — Names for Fawn Alpacas
- Salkantay — Place in Peru · Peruvian Place Names for Alpacas
- Sami — luck, fortunate · Quechua Alpaca Names
- Samson — Male Alpaca Names
- Sancho — Male Alpaca Names
- Sandy — Names for Fawn Alpacas
- Santiago — Male Alpaca Names
- Sara — corn · Quechua Alpaca Names
- Satin — Fiber & Yarn Alpaca Names
- Saturn — Space & Nature Alpaca Names
- Scone — Food-Inspired Alpaca Names
- Sergio — Male Alpaca Names
- Sesame — Food-Inspired Alpaca Names
- Shadow — Names for Black Alpacas
- Shale — Names for Grey Alpacas
- Shawl — Fiber & Yarn Alpaca Names
- Shear Khan — Funny Alpaca Names
- Sheary Crow — Funny Alpaca Names
- Shuttle — Fiber & Yarn Alpaca Names
- Sierra — Space & Nature Alpaca Names
- Silk — Fiber & Yarn Alpaca Names
- Sillustani — Place in Peru · Peruvian Place Names for Alpacas
- Silver — Names for Grey Alpacas
- Sinchi — strong, brave · Quechua Alpaca Names
- Sir Fluffington — Funny Alpaca Names
- Sir Hums-a-Lot — Funny Alpaca Names
- Sirius — Space & Nature Alpaca Names
- Sisa — blossom · Quechua Alpaca Names
- Skein — Fiber & Yarn Alpaca Names
- Sky — Space & Nature Alpaca Names
- Slate — Names for Grey Alpacas
- Smokey — Names for Grey Alpacas
- Snoop Wooly — Funny Alpaca Names
- Snowball — Names for White Alpacas
- Snowflake — Names for White Alpacas
- Sol — sun · Spanish Alpaca Names
- Soledad — Female Alpaca Names
- Solstice — Space & Nature Alpaca Names
- Sooty — Names for Grey Alpacas
- Sophia — Female Alpaca Names
- Spindle — Fiber & Yarn Alpaca Names
- Spit Happens — Funny Alpaca Names
- Spitfire — Funny Alpaca Names
- Spitney Spears — Funny Alpaca Names
- Sprinkles — Funny Alpaca Names
- Stardust — Space & Nature Alpaca Names
- Steel — Names for Grey Alpacas
- Stella — Female Alpaca Names
- Sterling — Names for Grey Alpacas
- Storm — Names for Black Alpacas
- Stormy — Names for Grey Alpacas
- Straw — Names for Fawn Alpacas
- Sugar — Names for White Alpacas
- Sumaq — beautiful · Quechua Alpaca Names
- Summit — Space & Nature Alpaca Names
- Sunny — Names for Fawn Alpacas
- Supay — god of the underworld · Inca & Andean Mythology Names
- Sushi — Food-Inspired Alpaca Names