- AAT – Anglo-Australian Telescope
- AdV – Advanced Virgo
- AGN – active galactic nuclei
- AlGaAs – Aluminum Gallium Arsenide
- aLIGO – advanced LIGO
- ARC – Australian Research Council
- ASKAP – Australian Square Kilometre Array Pathfinder
- BBH – Binary Black Hole
- BHBH – Black Hole-Black Hole system
- BNS – Binary Neutron Star
- CBC – Compact Binary Coalescence
- CE – Cosmic Explorer
- CoE – Centre of Excellence
- COMPAS – Compact Object Mergers: Population Astrophysics and Statistics
- CRACO – Commensal Realtime ASKAP Fast Transient COherent
- DR – Data Release
- DWF – Deeper, Wider, Faster
- EM – Electromagnetic
- ET – Einstein Telescope
- FRB – Fast Radio Burst
- GR – General Relativity
- GRACE – Gravity Recovery and Climate Experiment
- GRACE FO – The Gravity and Climate Experiment Follow On
- GRB – Gamma-Ray Burst
- GWIC 3G – The Gravitational Wave International Committee Third Generation
- GWOSC – Gravitational Wave Open Science Center
- HWS – Hartmann wavefront sensor
- IMBH – Intermediate Mass Black Hole
- IPTA – International Pulsar Timing Array
- ITM – input test mass
- LI – Liquid Instrument Pty Ltd
- LIDAR – Light Detection and Ranging
- LIEF – Linkage Infrastructure, Equipment and Facilities
- LIGO – Laser Interferometer Gravitational-Wave Observatory
- LISA – Laser Interferometer Space Antenna
- LMXB – low-mass X-ray binary
- LRN – luminous red novae
- LSC – LIGO Scientific Collaboration
- LVK – LIGO-Virgo-KAGRA Collaboration
- ML – Machine Learning
- MMA – Multi-messenger astronomy
- MOU – Memorandum of Understanding
- NICER – Neutron star Interior Composition Explorer (NICER) X-ray telescope
- NSBH – Neutron Star-Black Hole system
- NSNS – Neutron Star-Neutron Star system
- O1, O2, etc – Observation Run 1, 2, etc
- PD – Photodiode
- PPKTP – Periodically poled potassium titanyl phosphate
- PPTA – Parkes Pulsar Timing Array
- PSR – pulsar
- PST – Pulsar Timing Sub-element
- PTA – Pulsar Timing Array
- PV – peculiar velocity
- PWT – Parameter Waveform Table
- SKA – Square Kilometre Array
- SNR – Signal-to-Noise Ratio
- TDE – tidal disruption event
- TDI – time delay interferometry
- TGR – testing general relativity
- TORPEDO – TORsion PEndulum Dual Oscillator I
- VLBI – Very Long Baseline Interferometry
- VLT – Very Large Telescope
- VR – Virtual Reality
