Can Australians go to Singapore without a visa?

Yes, Australian citizens can enter Singapore without applying for a visa beforehand for tourism or business purposes for stays up to 90 days per visit under Singapore's Visa Exemption Scheme. However, you must still meet all entry requirements including having a valid passport, return tickets, and completing the Singapore Arrival Card. If you are an Australian resident and hold a travel document from select countries, you will need a visa to enter Singapore. To check if your home country requires a visa for Singapore, visit the Immigration and Checkpoints Authority website. 

As entry and visa requirements for Singapore may change, it is your responsibility to verify the entry and visa requirements with official government sources such as Singapore Embassy in Australia or the Singapore Ministry of Foreign Affairs.