- Radical Innovation
- Random Sample
- RankBrain
- Ranking
- rapid application development
- rapid experimentation
- Rapid Prototyping
- rational product management
- Reach
- Reactors
- Real-time bidding
- Real time bidding
- Realization Gap
- Rebranding
- Redesign
- Redirection
- refactoring
- Referral traffic
- Referral Traffic
- Regional keywords
- Registrar
- Relationship marketing
- Relay-Race Process
- Relay Race Process
- Rel=canonical
- release demo
- release management
- release notes
- release plan
- Relevance
- Remarketing
- Remarketing marketing
- Render
- Render-blocking scripts
- Render blocking scripts
- Rendering
- Repetitive marketing
- Reply marketing
- Reposition
- Reputation management
- Reputation marketing
- Request for proposal (RFP)
- Request for Quote (RFQ)
- Resource Matrix
- Resource pages
- Resource Plan
- Responsibility Matrix
- Responsive design
- Restricting marketing
- retention
- retention rate
- retrospective
- Return on Ideas
- Return on Investment (ROI)
- Retweet
- Revenue-Based marketing
- Revenue per visitor
- revenues def
- Reverse marketing
- rice
- rice scoring model
- Rich snippet
- Rigid Gate
- Risk
- Risk Acceptance
- Risk Avoidance
- Risk-based marketing
- Risk Management
- Risk Mitigation
- Risk Tolerance
- Risk Transference
- roadmap milestones
- Roadmapping
- ROAS
- Robotic process automation (RPA)
- Robots.txt
- Robust Design
- ROI
- Role-Based marketing
- Routine innovation
- Rugby Process