The name Gillian has been used for three tropical cyclones worldwide: two in the Australian region and one in the South Pacific Ocean.
In the Australian Region:
- Cyclone Gillian (1997) – a Category 1 tropical cyclone that made landfall Queensland as tropical depression.
- Cyclone Gillian (2014) – a Category 5 severe tropical cyclone that affected northern Australia with gusty winds and some rainfall, while on the Indonesian island of Java, it produced strong waves.
In the South Pacific Ocean:
- Cyclone Gillian (1970) – a Category 1 tropical cyclone, that did not affect land.