Murphy's Laws starting with R (39 laws)
- Rule of Accuracy
- Rule of Accuracy Corollary
- Rule of Feline Frustration
- Rule of the Great
- Rev. Mahaffy's Observation
- Rakove's Laws of Politics
- Rakove's Laws of Politics
- Ralph's Observation
- Randolph's Cardinal Principle of Statecraft
- Rangnekar's Modified Rules Concerning Decisions
- Rangnekar's Modified Rules Concerning Decisions
- Rangnekar's Modified Rules Concerning Decisions
- Rangnekar's Modified Rules Concerning Decisions
- Rapoport's Rule of the Roller-Skate Key
- Raskin's Zero Law
- Rather's Rule
- Rayburn's Rule
- Richard's Complementary Rules of Ownership
- Richard's Complementary Rules of Ownership
- Richman's Inevitables of Parenthood
- Richman's Inevitables of Parenthood
- Richman's Inevitables of Parenthood
- Richman's Inevitables of Parenthood
- Riddle's Constant
- Riesman's Law
- Rigg's Hypothesis
- Robertson's Law
- Rodovic's Rule
- Rodriguez's Observation
- Roemer's Law
- Roger's Ratio
- Rosenbaum's Rule
- Rosenfield's Regret
- Rosenstock-Huessy's Law of Technology
- Rudin's Law
- Runamok's Law
- Runyon's Law
- Ryan's Law
- Rule of the Way Out
