- Jan 10–17: Quantum Technology in Biological Systems (QTBS2009), Singapore.
- Jan 12–16: 12th Workshop on Quantum Information Processing (QIP 2009), Santa Fe, USA.
- Jan 19–22: 1st Winter School on Practical Quantum Cryptography (QIP 2009), Les Diablerets, Switzerland. *
- Jan 22–30: Numerical Approaches to Quantum Many-Body Systems, Los Angeles, United States of America.
- Jan 29–31: Foundations and Applications of Quantum Science, Innsbruck, Austria.
- Feb 1–7: Third International Conference on Quantum, Nano and Micro Technologies (ICQNM 2008), Cancun, Mexico.
- Feb 2–6: Quantum Physics with Atoms and Photons, Les Houches, France.
- Feb 2–6: Coogee'09–Sydney Quantum Information Theory Workshop, Coogee, Australia.
- Feb 9–11: Centre for Quantum Computer Technology Annual Meeting, Darling Harbour, Australia.
- Feb 18–19: Workshop on Integrated Atomic Systems II, Seattle, USA.
- Feb 19–22: Eleventh Annual SQuInT Workshop, Seattle, USA.
- Mar 16–20: American Physical Society March Meeting, Pittsburgh, USA.
- Mar 25–27: Quantum Interaction (QI 2009), Saarbruecken, Germany.
- Mar 31–Apr 2: IMA conference on Quantum Computing and Complexity of Quantum Simulation, London, UK.
- Apr 2–Apr 3: Inaugural Symposium on Quantum Science and Technology, Brisbane, Australia.
- Apr 13–17: Quantum Information and Computation VII (SPIE International Symposium on Defense, Security + Sensing), Orlando, USA.
- Apr 20–Jul 17: Workshop on Quantum Control of Light and Matter, Santa Barbara, USA.
- Apr 23–25: Workshop on Quantum Information Science, Vienna, USA.
- May 4–5: Workshop on Multi-Qubit Quantum Operations–Challenges and Approaches, College Park, USA.
- May 11–13: Fourth workshop on Theory of Quantum Computation, Communication, and Cryptography (TQC2009), Waterloo, Canada.
- May 11–15: XXXII National Meeting on Condensed Matter Physics of The Brazilian Physical Society (XXXII ENFMC), Águas de Lindóia, Brazil.
- May 18–22: Concepts and Methods in Quantum Control, Santa Barbara, USA.
- May 20–23: 40th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics (DAMOP 2009), Charlottesville, USA.
- May 23–27: 16th Central-European Workshop on Quantum Optics 2009 (CEWQO 2009), Turku, Finland.
- May 24–Jun 14: Quantum Simulation/Computation with Cold Atoms and Molecules, Aspen, USA.
- May 31–Jun 5: International Quantum Electronics Conference (CLEO/IQEC 2009), Baltimore, USA.
- Jun 2: Multi-qubits Coherent Operations Proposers' Day, College Park, USA.
- Jun 7–Jun 27: Quantum Information, Benasque, Spain.
- Jun 8–Jun 12: Quantum Optics VII: Quantum Engineering of Atoms and Photons, Zakopane, Poland.
- Jun 11–Jun 14: 2nd Vienna Symposium on the Foundations of Modern Physics, Vienna, Austria.
- Jun 14–Jun 19: Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference (CLEO Europe-EQEC 2009), Munich, Germany.
- Jun 14–Jun 19: Quantum Theory: Reconsideration of Foundations, 5 (QTRF5), Växjö, Sweden.
- Jun 22–Jun 26: 11th International Conference on Squeezed States and Uncertainty Relations (ICSSUR09), Olomouc, Czech Republic.
- Jun 22–Jun 26: 4th Feynman festival, Olomouc, Czech Republic.
- Jun 23–Jun 28: Control of Quantum Dynamics of Atoms, Molecules and Ensembles by Light (CAMEL 2009), Nessebar, Bulgaria.
- Jun 24–Jun 26: The final QIP IRC Annual Conference, Oxford, UK.
- Jun 29–Jul 24: Les Houches Summer Session, Singapore.
- Jun 30–Jul 2: 6th World Conference of Science Journalists, Westminster, UK.
- Jul 6–10: Second workshop on Operator Structure in Quantum Information, Toronto, Canada.
- Jul 7–10: Workshop on Quantum Effects in Biological Systems (QuEBS 2009), Lisbon, Portugal.
- Jul 13–17: 18th International Laser Physics Workshop, Barcelona, Spain.
- Jul 17–23: International Conference on Quantum Foundation and Technology: Frontier and Future (ICQFT'09), Shanghai, China.
- Jul 19–24: Workshop on Quantum Marginals and Density Matrices, Toronto, Canada.
- Aug 2–7: Quantum Control Of Light And Matter, South Hadley, USA.
- Aug 4–6: Quantum Communications and Quantum Imaging VII (part of SPIE Optics & Photonics), San Diego, USA.
- Aug 10–14: Mathematics in Experimental Quantum Information Processing, Waterloo, Canada.
- Aug 10–14: Workshop on Quantum Computation and Quantum Spin Systems, Vienna, Austria.
- Aug 17–21: Ninth Canadian Quantum Information Summer School, Toronto, Canada.
- Aug 17–21: ARO/NSA/IARPA Quantum Computing & Quantum Algorithms Program Review, Minneapolis, USA.
- Aug 18–Oct 17: Entanglement and correlations in many-body quantum mechanics, Vienna, Austria.
- Aug 24–27: Conference on Quantum Information and Quantum Control III (CQIQCIII), Toronto, Canada.
- Aug 24–26: Complexity Resources in Physical Computation, Oxford, UK.
- Aug 26–29: Ninth Asian Conference on Quantum Information Science (AQIS'09), Nanjing, China.
- Sep 1–6: School on Quantum Information, Paraty, Brazil.
- Sep 5–11: Bose-Einstein Condensation 2009: Frontiers in Quantum Gases (BEC2009), Sant Feliu de Guixols, Spain.
- Sep 7–11: International Workshop on Quantum Information, Paraty, Brazil.
- Sep 21–25: International Conference on Quantum Information Processing and Communication (QIPC 2009), Rome, Italy.
- Sep 27–Oct 29: Nordita Program in Quantum Information, Stockholm, Sweden.
- Oct 11–15: Frontiers in Optics 2009 / Laser Science XXV (FiO/LS 2009), San Jose, USA.
- Oct 12–15: Wilhelm und Else Heraeus Seminar on Quantum Simulators, Bad Honnef, Germany.
- Oct 26–30: International Conference on Quantum Communication and Quantum Networking (From Satellite to Nanoscale), Vico Equense, Italy.
- Nov 24–Nov 26: 10th International Symposium on Frontiers of Fundamental & Computational Physics (FFP10), Perth, Australia.
- Nov 29–Dec 3: 9th Australasian Conference on Optics, Lasers, and Spectroscopy (ACOLS 2009), Adelaide, Australia.
- Nov 30–Dec 4: The 2009 Asher Peres International Physics School: The Edge, twixt quantum and classical phenomena, Sydney, Australia.
- Dec 3–6: The 4th International Conference on Information Theoretic Security (ICITS 2009), Shizuoka, Japan.
* = Indicates winter in the Northern hemisphere–it's summer here of course!