Cass

Shortening.

Cass

1. A medieval diminutive of the female given name Cassandra, later also used for Cassidy, and Catherine with its variant forms.
   • 1999 Ann Rule, And Never let Her Go, Warner Books (2000), →ISBN, page 30:

     Most of the time, Anne Marie and Kathleen got along as well as any sisters six years apart would: Kathleen called Anne Annie, and Anne Marie called Kathleen Cass or Kate.

2. A matronymic surname​.
3. A male given name transferred from the surname; also a diminutive of Cassius.

• Cass County
• Cassville

• Cassie

• ASCs, CSAs, SACs, Sacs, sacs