The Actuaries Institute of Australia, Institute and Faculty of Actuaries and the Singapore Actuarial Society are delighted to host the **Actuarial loss prediction competition 2020/21** to promote development of data analytics talent especially among actuaries. The challenge is to predict Workers Compensation claims using highly realistic synthetic data. The data is fully synthetic and not specific to any legal jurisdiction or country. We are grateful to Colin Priest for building and supplying the dataset. We invite the competitors to take claims inflation into account. Upon completion of the competition we may get in touch with the winners for knowledge sharing opportunities within the actuarial community.