radix;
Ramsey Frank Plumpton;
Ramus Petrus - Pierre de la Ramee;
Rand Ayn - Alissa Rosenbaum;
random;
randomness;
range;
rational;
rationalism;
rationalist;
rational numbers;
raw data;
Rawls John;
real;
realisation;
realism;
realism perceptual;
realist;
reality;
real number;
real-time;
Real World;
reason;
recipient;
recollection;
record;
recourse;
recursion;
recursive;
recursive definition;
recursive function;
recursive function theory;
recursive set;
recursive type;
reductio ad absurdum;
reduction;
reductionism;
redundancy;
redundancy theory of truth;
re-engineering;
reference;
reflection;
reflexive;
reflexive domain;
Reflexive transitive closure;
refutable;
Regan Tom;
Regis Pierre-Sylvain;
regression;
Reichenbach Hans;
Reid Thomas;
reification;
reify;
reinvent the wheel;
relation;
relational algebra;
relational calculus;
relative consistency proof;
relatively prime;
relativism;
relevance;
reliability;
Reliability, Availability, Serviceability;
reliable communication;
renaissance;
replacement - rules of;
representation;
representationalism;
repression;
requirements;
requirements analysis;
Requirements Engineering;
res cogitans - res extensa;
residues - method of;
resolution;
responsibility;
restructuring;
reusability;
reuse;
revealed theology;
reverse engineering;
Reverse Polish Notation;
Ricoeur Paul;
Riemann Georg Friedrich Bernhard;
rights;
rigid designator;
ring network;
ring topology;
Ritchie David George;
robot;
robust;
Rohault Jacques;
romanticism;
Rorty Richard;
Ross William David;
Rousseau Jean-Jacques;
routine;
Royce Josiah;
Ruddick Sara Loop;
rule;
rules of inference;
run-time;
Russell Bertrand Arthur William;
Russell's Attic;
Russell's Paradox;
Russell's theory of descriptions;
Ryle Gilbert;