| Hiiragi | |
| Cover: | Hiiragi.jpg |
| Type: | single |
| Artist: | Do As Infinity |
| Album: | Gates of Heaven |
| Released: | November 6, 2003 |
| Genre: | J-pop |
| Length: | 15:26 |
| Label: | avex trax |
| Producer: | Dai Nagao, Seiji Kameda |
| Prev Title: | Honjitsu wa Seiten Nari |
| Prev Year: | 2003 |
| Next Title: | Rakuen |
| Next Year: | 2004 |
is Do As Infinity's seventeenth single, released in 2003. It was used in the drama .
This song was included in the band's compilation album Do the A-side.