This is a list of (some of) the researchers in quantum gravity who have Wikipedia articles. Jan Ambjørn: expert on dynamical triangulations who helped develop the causal dynamical triangulations approach to quantum gravity. Augusto Sagnotti: the physicist who demonstrated that perturbative quantum gravity diverges at two loops, and made a number of important contributions to string theory (most notably the discovery of the orientifold, which connects type I string theory to type IIB string theory). Giovanni Amelino-Camelia: physicist who developed the idea of doubly special relativity, and founded Quantum-Gravity phenomenology. Abhay Ashtekar: inventor of the Ashtekar variables, one of the founders of loop quantum gravity. John Baez: mathematical physicist who introduced the notion of spin foam in loop quantum gravity (a term originally introduced by Wheeler). Julian Barbour: philosopher and author of The End of Time, Absolute or Relative Motion?: The Discovery of Dynamics. John W. Barrett: mathematical physicist who helped develop the Barrett–Crane model of quantum gravity. Martin Bojowald: physicist who developed the application of loop quantum gravity to cosmology. Steve Carlip: expert on 3-dimensional quantum gravity. Louis Crane: mathematician who helped develop the Barrett–Crane model of quantum gravity. Bryce DeWitt: formulated the Wheeler–DeWitt equation for the wavefunction of the Universe with John Archibald Wheeler. Bianca Dittrich: mathematical physicist known for her contributions to loop quantum gravity and spin foam models, currently working on coarse-graining of spin foams. Fay Dowker: physicist working on causal sets as well as the interpretation of quantum mechanics. David Finkelstein: physicist who has contributed much quantum relativity and the logical foundations of QR. Rodolfo Gambini: physicist who helped introduce loop quantum gravity; coauthor of Loops, Knots, Gauge Theories and Quantum Gravity. Gary Gibbons: physicist who has done important work on black holes. Brian Greene: physicist who is considered one of the world's foremost string theorists. James Hartle: physicist who helped develop the Hartle-Hawking wavefunction for the universe. Stephen Hawking: leading physicist, expert on black holes and discoverer of Hawking radiation who helped develop the Hartle-Hawking wavefunction for the universe. Michał Heller: mathematical physicist, philosopher & theologian working on non-commutative geometry. Laurent Freidel: mathematical physicist known for his contributions to loop quantum gravity and spin foam models, in particular the Freidel-Krasnov model. Christopher Isham: physicist who focuses on conceptual problems in quantum gravity. Ted Jacobson: physicist who helped develop loop quantum gravity. Michio Kaku: physicist one of the foremost leading String theorist and also known