| 1/1/1909, Fri | New Year's Day |
- Note
- An official national public holiday.
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| 1/26/1909, Tue | Australia Day |
- Note
- An official national public holiday. If this occurs on a Sunday, the observance is moved to the following Monday.
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| 3/8/1909, Mon | Canberra Day |
- Note
- An official provincial holiday.
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| 4/9/1909, Fri | Good Friday |
- Note
- An official national public holiday.
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| 4/11/1909, Sun | Easter |
- Note
- Not an official national public holiday. A Christian religious observance.
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| 4/12/1909, Mon | Easter Monday |
- Note
- An official national public holiday.
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| 4/25/1909, Sun | ANZAC Day |
- Note
- An official national holiday. If this holiday occurs on Sunday, the following Monday is also an observance day.
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| 4/26/1909, Mon | ANZAC Day: Additional Observance Day |
- Note
- An official national holiday. If this holiday occurs on Sunday, the following Monday is also an observance day.
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| 6/1/1909, Tue | Reconciliation Day |
- Note
- An official provincial holiday.
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| 6/14/1909, Mon | King's Birthday |
- Note
- An official national holiday, but observance dates vary by province.
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| 10/5/1909, Tue | Labour Day |
- Note
- An official provincial holiday.
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| 12/25/1909, Sat | Christmas Day |
- Note
- An official national public holiday.
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| 12/26/1909, Sun | Boxing Day |
- Note
- An official national holiday. If this holiday occurs on Sunday, the following Tuesday is also an observance day.
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| 12/27/1909, Mon | Christmas Day: Additional Observance Day |
- Note
- An official national public holiday.
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| 12/28/1909, Tue | Boxing Day: Additional Observance Day |
- Note
- An official national holiday. If this holiday occurs on Sunday, the following Tuesday is also an observance day.
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