Due to many developments in tunnel design in Australia over a period of many years, the Australian Tunnelling Society (ATS) has recognised the requirement to establish a guideline of tunnel design practice in Australia.  During the Tunnel Design Short Course in 2018 held in Melbourne, the ATS Young Members (<35 years) recognised this deficiency and suggested a Working Group to develop a best practice guideline for Australian tunnel design.  The group is supported by the ATS executive committee with the Young Members intending to deliver this guideline through the year 2019.