reas - rei
- register's court
- registered bond
- registered mail
- registered nurse
- registered security
- registered ship
- registered stocks
- registered tonnage
- registered voter
- Registra Brevium
- registrar
- Registrar of Copyrights
- registrarius
- registration
- registration for military service
- registration of alien
- registration of animal
- registration of claim to copyright
- registration of criminal
- registration of land titles
- registration of patent
- registration of stock transfer
- registration of trademark
- registration of vessel
- registration of voters
- registration receipt card
- registration tax
- registrum librum
- registrum omnium brevium
- registry
- registry of ship
- regnant
- regnum ecclesiasticum
- Regnum non est divisibile
- regrant
- regrating
- regress
- regula
- regula Catoniana
- Regula est, juris quidem ignorantiam cuique nocere, facti vero ignorantiam non nocere