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- Obscura Hail @ Yours & Owls Festival, September ’18
- Ocean Alley @ Yours & Owls Festival, September ’18
- Ocean Grove @ Good Things Festival Sydney, December ’22
- Ocean Grove @ Yours & Owls Festival, October ’19
- Olympia @ The Basement, April ’17
- One Day As A Lion @ Adelaide Soundwave, March ’11
- One Of The Boys @ The Avoca Hotel, September ’10
- Os Mutantes @ Womad, March ’11
- Outright @ Download Festival, March ’19
- Over-Reactor @ Enigma, April ’11
- Over-Reactor @ HQ, July ’11
- Over-Reactor @ The Gov, October ’10
- Owl Eyes @ Jive, September ’11
- The Offspring @ Adelaide Soundwave, March ’13
- The Orwells @ Yours & Owls Festival, October ’17