Valid ISO 3166-1 alpha-2 codes and country flags from 1988 to 2001 on the day of the Eurovision Song Contest final each year. Italicized countries and territories had changed name or ceased to exist by a given date, but the ISO code was not obsolete or the ISO country name was not changed yet.
30 April 1988 edit
Bolded countries competed in the Eurovision Song Contest 1988 in Dublin, Ireland.
6 May 1989 edit
Bolded countries competed in the Eurovision Song Contest 1989 in Lausanne, Switzerland.
5 May 1990 edit
Bolded countries competed in the Eurovision Song Contest 1990 in Zagreb, Yugoslavia.
4 May 1991 edit
Bolded countries competed in the Eurovision Song Contest 1991 in Rome, Italy.
9 May 1992 edit
Bolded countries competed in the Eurovision Song Contest 1992 in Malmö, Sweden.
15 May 1993 edit
Bolded countries competed in the Eurovision Song Contest 1993 in Millstreet, Ireland. Bolded and italicized countries failed to qualify from Kvalifikacija za Millstreet that was held in Ljubljana, Slovenia on 3 April.
30 April 1994 edit
Bolded countries competed in the Eurovision Song Contest 1994 in Dublin, Ireland.
13 May 1995 edit
Bolded countries competed in the Eurovision Song Contest 1995 in Dublin, Ireland.
18 May 1996 edit
Bolded countries competed in the Eurovision Song Contest 1996 in Oslo, Norway. Bolded and italicized countries failed to qualify from the audio-only pre-qualification round.
3 May 1997 edit
Bolded countries competed in the Eurovision Song Contest 1997 in Dublin, Ireland.
9 May 1998 edit
Bolded countries competed in the Eurovision Song Contest 1998 in Birmingham, United Kingdom.
29 May 1999 edit
Bolded countries competed in the Eurovision Song Contest 1999 in Jerusalem, Israel.
13 May 2000 edit
Bolded countries competed in the Eurovision Song Contest 2000 in Stockholm, Sweden.
12 May 2001 edit
Bolded countries competed in the Eurovision Song Contest 2001 in Copenhagen, Denmark.
