This is the list of the number-one singles of the Finnish Singles Chart in 1990.[1] [2]
| Issue date | Artist | Title | |
|---|---|---|---|
| January 4 | Bat & Ryyd | "Ryyd-joulu" | |
| January 18 | Lättykettu & Tehosekoittajat | "Letkautus" | |
| February 1 | "Get Up! (Before the Night Is Over)" | ||
| February 15 | |||
| March 1 | "Nothing Compares 2 U" | ||
| March 15 | "Oi beibi" / "Tuhansien sulojen maa" | ||
| March 29 | |||
| April 12 | |||
| April 26 | |||
| May 10 | "Raptori" | ||
| May 24 | "Vogue" | ||
| June 12 | "Doubleback" | ||
| June 26 | "Sydän tyhjää lyö" | ||
| July 10 | "Whose Law (Is It Anyway?)" | ||
| July 31 | Madonna | "Hanky Panky" | |
| August 14 | MC Nikke T | "Jos haluu saada" | |
| August 28 | |||
| September 10 | Eppu Normaali | "Tahroja paperilla" | |
| September 24 | "Thunderstruck" | ||
| October 8 | "So Hard" | ||
| October 22 | |||
| November 5 | MC Nikke T | "Ihminen ei voi elää vetämättä" | |
| November 19 | |||
| December 3 | "I've Been Thinking About You" | ||
| December 17 | Madonna | "Justify My Love" |