This document discusses the potential for high speed rail in Australia. It summarizes that high speed rail refers to trains traveling over 250km/h on purpose-built tracks, and provides examples of existing high speed rail networks around the world. Previous proposals for high speed rail in Australia failed due to disagreements over funding between governments and private partners. However, changes in high speed rail technology, increasing travel demand on Australia's east coast, and concerns over energy efficiency and climate change suggest high speed rail should be reexamined for Australia as a transportation alternative.