blue #
= weekly pop chart peak
| 1 | Why? | 1953 |  |
| Karen Chandler |
| 2 | Why | 1954 | |
| Nat King Cole with Nelson Riddle Orchestra |
| 3 | Why | Jan 1957 | |
| The Cues |
| 4 | Why | May 1959 | |
| Gary Lee |
| 5 | Why | 1 | Dec 1959 | |
| Frankie Avalon |
| 6 | Why | Feb 1960 | |
| Anthony Newley |
| 7 | Why | Apr 1964 | |
| The Beatles With Tony Sheridan |
| 8 | Why (Doncha Be My Girl) | Nov 1964 | |
| The Chartbusters |
| 9 | Why? (Am I Treated So Bad) | Apr 1967 | |
| Cannonball Adderley |
| 10 | Why (Am I Treated So Bad) | Jun 1967 | |
| The Staple Singers |
| 11 | Why (Am I Treated So Bad) | Jul 1967 | |
| The Sweet Inspirations |
| 12 | Why (Am I Treated So Bad) | Jul 1967 | |
| Bobby Powell |
| 13 | Why (Must We Fall In Love) | Apr 1970 | |
| Diana Ross And The Supremes & The Temptations |
| 14 | Why? | Mar 1971 | |
| Roger Whittaker |
| 15 | Why | 20 | Oct 1972 | |
| Donny Osmond |
| 16 | Why | Aug 1975 | |
| Average White Band |
| 17 | Why | Aug 1982 | |
| Carly Simon |
| 18 | Why? | Oct 1984 | |
| Bronski Beat |
| 19 | Why (You Could Have Had It All) | Sep 1988 | |
| Tongue In Cheek |
| 20 | Why | Jul 1991 | |
| Small Change |
| 21 | Why | 27 | Jun 1992 | |
| Annie Lennox |
| 22 | Why? | Feb 1994 | |
| D-Mob With Cathy Dennis |
| 23 | (I Wanna Know) Why | Mar 1994 | |
| Sinclair |
| 24 | Why | Oct 1994 | |
| Meat Puppets |
| 25 | Why | Aug 1995 | |
| Jamie Walters |
| 26 | Why? | Aug 1996 | |
| Ricardo Da Force |
| 27 | Why | Oct 1996 | |
| 3T Featuring Michael Jackson |
| 28 | Why | Nov 1999 | |
| Glamma Kid |
| 29 | Why | 1999 | |
| Wide Mouth Mason |
| 30 | Why | Jan 2001 | |
| Mis-Teeq |
| 31 | Why | Apr 2002 | |
| Agent Sumo |
| 32 | Why? (Looking Back) | Jun 2003 | |
| Heartless Crew |
| 33 | Why? | Sep 2004 | |
| Jadakiss Featuring Anthony Hamilton |
| 34 | Why | Jun 2005 | |
| Sonique |
| 35 | Why | Jun 2005 | |
| DJ Sammy |
| 36 | Why | May 2006 | |
| Jason Aldean |
| 37 | Why | Sep 2007 | |
| Junkyard Prophet Featuring Stephanie Joy |
| 38 | Why | Sep 2007 | |
| Gabrielle Featuring Paul Weller |
| 39 | Why | Nov 2009 | |
| Rascal Flatts |
| 40 | Why | Jul 2012 | |
| Mary J. Blige Featuring Rick Ross |
| 41 | Why | Jun 2013 | |
| Michelle Chamuel |