- special radical
- special rank
- special reagent
- special records
- special records and archives management
- special records of the national anthem
- special rectification
- special refractories
- Special Regulation of Labour Protection of Women Workers
- Special Regulations on the People's Republic of China for Utilization of aqua-wild Animals
- special regulatory systems
- special relativity
- special relativity principle
- special relativity theory
- special representation
- special residue class
- special resultant
- special Riccati equation
- special rice
- special ring
- special risk insurance
- special road
- special rock/soil survey
- special rule of detachment
- Special Rules on the Labor Protection of Female Employees