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.
Bolded countries competed in the Eurovision Song Contest 1988 in Dublin, Ireland.
Bolded countries competed in the Eurovision Song Contest 1989 in Lausanne, Switzerland.
Bolded countries competed in the Eurovision Song Contest 1990 in Zagreb, Yugoslavia.
Bolded countries competed in the Eurovision Song Contest 1991 in Rome, Italy.
Bolded countries competed in the Eurovision Song Contest 1992 in Malmö, Sweden.
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.
Bolded countries competed in the Eurovision Song Contest 1994 in Dublin, Ireland.
Bolded countries competed in the Eurovision Song Contest 1995 in Dublin, Ireland.
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.
Bolded countries competed in the Eurovision Song Contest 1997 in Dublin, Ireland.
Bolded countries competed in the Eurovision Song Contest 1998 in Birmingham, United Kingdom.
Bolded countries competed in the Eurovision Song Contest 1999 in Jerusalem, Israel.
Bolded countries competed in the Eurovision Song Contest 2000 in Stockholm, Sweden.
Bolded countries competed in the Eurovision Song Contest 2001 in Copenhagen, Denmark.