List of number-one albums of 2015 (Australia)

The ARIA Albums Chart ranks the best-performing albums and extended plays (EPs) in Australia. Its data, published by the Australian Recording Industry Association, is based collectively on each album and EP's weekly physical and digital sales. In 2015, 31 albums claimed the top spot, including Taylor Swift's 1989, which started its peak position in 2014, and thirteen acts achieved their first number-one album or EP in Australia: Meghan Trainor, Kendrick Lamar, Lee Kernaghan, Sam Smith, Hermitude, Tame Impala, Northlane, Dr. Dre, Bullet for My Valentine, The Weeknd, Troye Sivan, Parkway Drive and the Royal Philharmonic Orchestra.