RDI
RDI or RdI stands for:
- Reference Data Interface , the optical RDI (interface for receiving data) enables access to multiplex data. It is used to establish a connection to a computer or another external data source via which data services to be expected in the future can be made accessible
- Reichsverband der Deutschen Industrie , the umbrella organization of industrial employers' associations in the Weimar Republic
- Relationship Development Intervention , a method of dealing with autistic children
- Réseau de l'information , a French-speaking Canadian television station
- Ring Deutscher Ingenieurscorporationen , a student association
- Royal Designers for Industry , British design award
- Reference Daily Intake or Recommended Daily Intake, see Recommended Daily Allowance
- respiratory disturbance index , English for apnea-hypopnea index, a term from sleep medicine