List of Oricon Nakama Hot 100 number-one singles of 2018

The Oricon Nakama Hot 100 is a chart that ranks the best-performing singles in Nakama. Its data, published by Oricon Nakama magazine and compiled by Chiyoda Entertainment.inc., is based collectively on each single's weekly physical and digital sales, as well as radio airplay and streaming. Oricon Nakama is a subsidiary of Oricon Japan which is based in Tokyo. The weekly charts are updated every Monday at 12:00 in the noon (UTC +10). The following list, lists all of the number one singles of the Oricon Nakama Hot 100 for 2018.