| Title | Release date | Peak chart positions | Album |
| UK |
| "Lost in Your Love" | 24 February 1992 | 42 | The State of Play |
| "For Your Blue Eyes Only" | 17 August 1992 | 67 |
| "The Game of Love" | 4 January 1993 | 72 |
| "Absolution" | 9 August 1993 | 86 | Non-album single |
| "Build Me Up" | 11 March 1996 | 89 | When Saturday Comes OST |
| "Dance with Me"(Tin Tin Out featuring Tony Hadley) | 28 April 1997 | 35 | Always |
| "Separate Lives"(Erikah Karst featuring Tony Hadley) | 1997 | – | Non-album single |
| "First of May" | 10 November 1997 | – | Tony Hadley |
| "Dance with Me" | 16 February 1998 | – |
| "Save a Prayer" | April 1998 | – |
| "Out of the Blue"(Alan Parsons featuring Tony Hadley) | 1999 | – | The Time Machine |
| "Will U Take Me" | November 2000 | – | Non-album singles |
| "Get So Lonely" | July 2001 | – |
| "Sweet Surrender" | March 2002 | – |
| "Feel You"(Marc et Claude featuring Tony Hadley) | 1 April 2002 | – | You Own the Sound |
| "I Can't Make You Love Me" / "After All This Time" | September 2003 | – | True Ballads |
| "The Mood I'm In" | November 2006 | – | Passing Strangers |
| "Wives & Lovers" | January 2007 | – |
| "The Good Life" | 30 April 2007 | – |
| "Goodbye Malinconia"(Caparezza featuring Tony Hadley) | 28 January 2011 | – | Il sogno eretico |
| "Take Back Everything" | 14 August 2014 | – | Talking to the Moon |
| "Tonight Belongs to Us" | 1 May 2018 | – |
| "Obvious" | 12 June 2020 | – | Non-album singles |
| "Because of You" | 18 February 2022 | – |
| "—" denotes a recording that did not chart or was not released in that territory. |