Si s - spar
- soke-reeve
- sokemanries
- sokemans
- soken
- Sola, ac per se, senectus donationem, testamentum aut transaetionem non vitiat
- solar day
- solar month
- solar time
- solar year
- solares
- solatium
- sold
- sold notes
- soldier
- soldier's bounty
- soldier's will
- Soldiers' and Sailors' Civil Relief Act
- soldiers' homes
- sole
- sole actor doctrine
- sole and unconditional ownership
- sole corporation
- sole discretion of trustee
- sole efficient cause
- sole judge
- sole ownership
- sole possession
- sole representative doctrine
- sole tenant
- solely
- solemn form
- solemn oath
- solemn occasion for advisory opinion
- solemn war
- solemn will
- solemnitas
- Solemnitates juris sunt observandae
- solemnization of marriage
- Solent foeminarum ductu bellare, et sexum in imperiis non discernere
- solicit