Katoomba is the main town of the City of Blue Mountains in New South Wales, Australia.

Katoomba may also refer to:

• Katoomba (crater), on Mars
• HMS Katoomba, Royal Navy ship built in 1889
• SS Katoomba, passenger ship built in 1913
• HMAS Katoomba, Royal Australian Navy ship built in 1941

This disambiguation page lists articles associated with the title Katoomba.
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