Billboard Japan Year-End Hot 100 singles of 2018

The Billboard Japan Hot 100 is a chart that ranks the best-performing singles in Japan. Published by Billboard Japan magazine and compiled by Nielsen SoundScan, it is based collectively on each single's weekly physical and digital sales, as well as airplay and streaming. The Billboard will publish an annual list of the 100 most successful songs throughout that year on the Hot 100 chart based on the information on performance. For 2018, the list was published on December 7, 2018.