List of best-selling singles in 1998 (Japan)
# List of best-selling singles in 1998 (Japan)

This is a list of the best-selling singles in 1998 in Japan, as reported by Oricon.

| Ranking | Single | Artist | Release | Sales |
| - | - | - | - | - |
| 1 | "Yuuwaku" | Glay | April 29, 1998 (1998-04-29) | 1,612,000 |
| 2 | "Yozora no Mukō" | SMAP | January 14, 1998 (1998-01-14) | 1,571,000 |
| 3 | "My Graduation" | Speed | February 18, 1998 (1998-02-18) | 1,475,000 |
| 4 | "Timing" | Black Biscuits | April 22, 1998 (1998-04-22) | 1,451,000 |
| 5 | "Soul Love" | Glay | April 29, 1998 (1998-04-29) | 1,372,000 |
| 6 | "Nagai Aida" | Kiroro | January 21, 1998 (1998-01-21) | 1,182,000 |
| 7 | "Honey" | L'Arc-en-Ciel | July 8, 1998 (1998-07-08) | 1,173,000 |
| 8 | "Aisareru yori Aishitai" | KinKi Kids | November 12, 1997 (1997-11-12) | 1,135,000 |
| 9 | "Time Goes By" | Every Little Thing | February 11, 1998 (1998-02-11) | 1,132,000 |
| 10 | "Zenbu Dakishimete" | KinKi Kids | July 29, 1998 (1998-07-29) | 1,127,000 |
| 11 | "Pink Spider" | hide with Spread Beaver | May 13, 1998 (1998-05-13) | 1,033,000 |
| 12 | "Ashita ga Kikoeru/Children's Holiday" | J-Friends | January 21, 1998 (1998-01-21) | 1,021,000 |
| 13 | "All My True Love" | Speed | October 28, 1998 (1998-10-28) | 1,012,000 |
| 14 | "Kasou" | L'Arc-en-Ciel | July 8, 1998 (1998-07-08) | 1,009,000 |
| 15 | "Snow Drop" | L'Arc-en-Ciel | October 7, 1998 (1998-10-07) | 997,000 |
