List of number-one singles of 2018 (Hypothetical version)

My Singles Chart ranks the best-performing singles in Australia. Its data is based collectively on the weekly physical and digital sales and streams of singles, as well as Airplay. A total of 29 artists reached the top spot in 2018, of which 20 reached the top spot for the first time, those being Camila Cabello, Young Thug, Post Malone, Bebe Rexha, Florida Georgia Line, Maren Morris, Grey, Calvin Harris, Childish Gambino, Shawn Mendes, 5 seconds of summer, Two feet, xxxtentacion, Bad Bunny, J Balvin, George Ezra, Clean Bandit, Ariana Grande, and Marshmello.