The fourth season of The Bachelorette Australia premiered on Network 10 on 10 October 2018. The season features Ali Oetjen, a 32-year-old healthy lifestyle motivator from Adelaide, South Australia, courting 18 men. Oetjen previously appeared on the first season of The Bachelor Australia featuring Tim Robards, where she finished in third place and later appeared on the first season of Bachelor in Paradise Australia.
The season began with 18 contestants.
Original airdate: 10 October 2018
Original airdate: 11 October 2018
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Original airdate: 18 October 2018
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Original airdate 15 November 2018