Ga·ius 
(gāəs, gī-) also Ca·ius (kā-, kī-) fl. AD 130-180.
(gāəs, gī-) also Ca·ius (kā-, kī-) fl. AD 130-180. Roman jurist whose chief work, the Institutes, is a major source of information on Roman law.
- San Fernando Valley
- Sanford
- Sanforized
- San Franciscan
- San Francisco
- San Francisco Mountains
- San Francisco Peaks
- sang
- San Gabriel Mountains
- Sangamon River
- sangaree
- Sanger
- Sanger
- sang-froid
- sangfroid
- sangha
- Sangiovese
- Sangre de Cristo Mountains
- sangria
- sanguicolous
- sanguinaria
- sanguinarily
- sanguinary
- sanguine
- sanguinely