These are the Polish number one albums of 2004, per the OLiS Chart.
| Issue Date | Album | Artist(s) | Reference(s) |
|---|---|---|---|
| January 5 | Nieprzyzwoite piosenki | ||
| January 12 | |||
| January 19 | |||
| January 26 | |||
| February 2 | |||
| February 9 | Złota kolekcja (Czas jak rzeka) | ||
| February 16 | |||
| February 23 | |||
| March 1 | |||
| March 8 | |||
| March 15 | |||
| March 22 | |||
| March 29 | |||
| April 5 | |||
| April 13 | Znaki szczególne | ||
| April 19 | Samotność po zmierzchu | Ania | |
| April 26 | Wideoteka | Jeden Osiem L | |
| May 4 | |||
| May 10 | Kabaret TEY Vol. 2: Ciąg dalszy | ||
| May 17 | |||
| May 24 | |||
| May 31 | |||
| June 7 | Siła sióstr | ||
| June 14 | |||
| June 21 | |||
| June 28 | Radio ZET: Tylko wielkie przeboje na lato | Różni wykonawcy | |
| July 5 | |||
| July 12 | |||
| July 19 | |||
| July 26 | |||
| August 2 | |||
| August 9 | |||
| August 16 | To co w życiu ważne | ||
| August 23 | |||
| August 30 | |||
| September 6 | |||
| September 13 | |||
| September 20 | |||
| September 27 | Samotna w wielkim mieście | ||
| October 4 | |||
| October 11 | |||
| October 18 | |||
| October 25 | |||
| November 2 | |||
| November 8 | |||
| November 15 | Watra | ||
| November 22 | |||
| November 29 | |||
| December 6 | |||
| December 13 | Bravo Hits Zima 2005 | Różni wykonawcy | |
| December 20 | |||
| December 27 |