This is a list of the singles that topped the Ultratop 50 in the Flanders region of Belgium in 1973.
| Issue date | Song | Artist |
|---|---|---|
| 6 January | "Crazy Horses" | The Osmonds |
| 13 January | ||
| 20 January | ||
| 27 January | ||
| 3 February | ||
| 10 February | "Clap Your Hands and Stamp Your Feet" | Bonnie St. Claire & Unit Gloria |
| 17 February | ||
| 24 February | ||
| 3 March | "Bianca" | Freddy Breck |
| 10 March | ||
| 17 March | ||
| 24 March | ||
| 31 March | ||
| 7 April | ||
| 14 April | "Forever and Ever" | Demis Roussos |
| 21 April | ||
| 28 April | ||
| 5 May | ||
| 12 May | ||
| 19 May | ||
| 26 May | "Tie a Yellow Ribbon Round the Ole Oak Tree" | Tony Orlando and Dawn |
| 2 June | ||
| 9 June | ||
| 16 June | ||
| 23 June | ||
| 30 June | "We Were All Wounded at Wounded Knee" | Redbone |
| 7 July | ||
| 14 July | ||
| 21 July | ||
| 28 July | ||
| 4 August | "Goodbye My Love Goodbye" | Demis Roussos |
| 11 August | ||
| 18 August | ||
| 25 August | "Rote Rosen" | Freddy Breck |
| 1 September | ||
| 8 September | ||
| 15 September | ||
| 22 September | "Hurt" | Bobby Vinton |
| 29 September | ||
| 6 October | "My Friend the Wind" | Demis Roussos |
| 13 October | ||
| 20 October | ||
| 27 October | ||
| 3 November | ||
| 10 November | ||
| 17 November | "Angie" | The Rolling Stones |
| 24 November | "Schones Madchen aus Arcadia" | Demis Roussos |
| 1 December | ||
| 8 December | ||
| 15 December | ||
| 22 December | ||
| 29 December | "Juanita" | Nick MacKenzie |
| Pos. | Title | Artist | Peak |
|---|---|---|---|
| 1 | "Rote Rosen" | Freddy Breck | 1 |
| 2 | "Do You Love Me" | Sharif Dean | 2 |
| 3 | "Tie a Yellow Ribbon Round the Ole Oak Tree" | Tony Orlando and Dawn | 1 |
| 4 | "Verboden dromen" | Will Tura | 2 |
| 5 | "Forever and Ever" | Demis Roussos | 1 |
| 6 | "Goodbye My Love" | Demis Roussos | 1 |
| 7 | "Bianca" | Freddy Breck | 1 |
| 8 | "My Friend the Wind" | Demis Roussos | 1 |
| 9 | "Hurt" | Bobby Vinton | 1 |
| 10 | "We Were All Wounded at Wounded Knee" | Redbone | 1 |