The Centre for Gravitational Astrophysics (CGA) is a new centre founded to build a world-leading role for Australia in the science and technology of gravitational wave sources. The centre strategically unifies the ongoing research at ANU Research School of Physics and ANU Research School of Astronomy and Astrophysics. The centre operates world-class facilities and collaborates with observatories and gravitational wave detectors that have a long history of research and technical activity at the forefront of astronomy and astrophysics. CGA researchers have contributed to detection of gravitational waves, and continuous improvement of sensitivity of the LIGO detectors. Active fields of research at CGA span instrumentation, theory, data analysis, source follow-up and multi-messenger astronomy. CGA incorporates two Australian Research Council Centres of Excellence, OzGrav and EQUS.