Comet Siding Spring, discoveries made at Siding Spring Observatory, may refer to:
- Periodic comets:
- 162P/Siding Spring (P/2004 TU12)
- 389P/Siding Spring (P/2006 R1)
- 468P/Siding Spring (P/2004 V3)
- P/2006 HR30
- P/2012 US27
- Non-periodic comets:
Comet Siding Spring, discoveries made at Siding Spring Observatory, may refer to: