This is the list of the number-one singles of the Finnish Singles Chart in 1991.[1] [2]
| Issue date | Artist | Title | |
|---|---|---|---|
| January 7 | "Debi Gibson" | ||
| January 21 | |||
| February 4 | "Bring Your Daughter... to the Slaughter" | ||
| February 18 | "3 AM Eternal" | ||
| March 4 | "Bad Boys" | ||
| March 18 | Hausmylly | "Se mustamies" | |
| April 2 | |||
| April 15 | |||
| April 29 | |||
| May 13 | "Punaista ja makeaa" | ||
| May 27 | "Sweet Soul Music" | ||
| June 10 | "Ring Ring Ring (Ha Ha Hey)" | ||
| June 24 | "Pienestä pitäen" | ||
| July 8 | "Lensin matalalla" | ||
| July 22 | "You Could Be Mine" | ||
| August 5 | "(Everything I Do) I Do It for You" | ||
| August 19 | "Enter Sandman" | ||
| September 2 | Guns N' Roses | "You Could Be Mine" | |
| September 16 | Guns N' Roses | "Don't Cry" | |
| September 30 | Guns N' Roses | "You Could Be Mine" | |
| October 14 | Ne Luumäet | "Onnellinen perhe" | |
| October 28 | |||
| November 12 | |||
| November 25 | "Black or White" | ||
| December 9 | "Laatikoita" | ||
| December 23 | Guns N' Roses | "Live and Let Die" |