Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Swear It Again (CD, Single, Enh, CD1) | RCA, BMG UK & Ireland | 74321 66206 2 | UK & Ireland | 1999 | |
| Swear It Again (CD, Maxi, Enh) | RCA | 74321 66356 2 | Europe | 1999 | |
| Swear It Again (CD, Single, Promo) | RCA | SWEAR1 | UK & Ireland | 1999 | |
| Swear It Again (CD, Single) | Arista | 07822-13816-2 | US | 2000 |