List of Artists Who Reached Number One On The Australian Singles Chart - O

O

• Oasis (1)
• Billy Ocean (2)
• Sinéad O'Connor (1)
• The Offspring (1)
• Johnny O'Keefe (2)
• Johnny O'Keefe & The Dee Jays (1)
• O.M.C. (1)
• 112 (1)
• Roy Orbison (9)
• Tony Orlando and Dawn (1)
• Joan Osborne (1)
• Donny Osmond (1)
• DJ Otzi (1)
• OutKast (1)
• Owl City (1)