| Label: | Columbia none |
| Genre: | Electronic |
| Style: | House, UK Garage |
| Format: | CDr (Single , Promo) |
| 1 | Who? | 3:54 |
| Label: | Columbia 671830 6 |
| Genre: | Electronic |
| Style: | House, UK Garage |
| Format: | Vinyl (12") |
| A | Who? (Main Mix) | 4:39 |
| B1 | Who? (The Wideboys Remix Dub) » Remix: Wideboys, The | 6:34 |
| B2 | Who? (Jon Carter's Screamin' Abdabs Mix) » Remix: Jon Carter | 6:44 |
| Label: | Columbia 671830 2 |
| Genre: | Electronic |
| Style: | House, UK Garage |
| Format: | CD (Maxi-Single , Enhanced) |
| 1 | Who? (Main Mix) | 4:59 |
| 2 | Who? (The Wideboys Remix) » Remix: Wideboys, The | 6:34 |
| 3 | Who? (Jon Carter's Screamin' Abdabs Mix) » Remix: Jon Carter | 6:44 |
| Video | Who? |
| Label: | Columbia XPR 2755 |
| Genre: | Electronic |
| Style: | UK Garage |
| Format: | 2 Vinyl (12" , Promo) |
| A | Who? (Main Mix) | 4:59 |
| B | Who? (The Wideboys Remix) » Remix: Wideboys, The | 6:34 |
| C | Who? (Dub) | 4:45 |
| D | Who? (The Wideboys Remix Dub) » Remix: Wideboys, The | 6:34 |
| Label: | Killer Instinct 12CASE002 |
| Genre: | Electronic |
| Style: | UK Garage |
| Format: | Vinyl (12") |
| A | Who? | |
| B | Who? (Dub Mix) |
| Label: | Columbia XPR 2760 |
| Genre: | Electronic |
| Style: | House, UK Garage |
| Format: | Vinyl (12" , Promo) |
| A | Who? (Jon Carter's Screamin' Abdabs Mix) | 4:39 |
| B | Who? (Main Mix) » Remix: Wideboys, The | 6:34 |
| Label: | Columbia XPCD1373 |
| Genre: | Electronic |
| Style: | House, UK Garage |
| Format: | CD (Single , Promo) |
| 1 | Who? | 3:54 |