2004–05 Southern Hemisphere tropical cyclone season

The 2004–05 Southern Hemisphere tropical cyclone season comprises three different basins. Their respective seasons are:


 * 2004–05 South-West Indian Ocean cyclone season west of 90°E,
 * 2004–05 Australian region cyclone season between 90°E and 160°E, and
 * 2004–05 South Pacific cyclone season east of 160°E.