(1) Information up to 1931-32 provided by Romeo Ionescu+
(2) with the collaboration of Vicente Martínez Calatrava
(3) with the collaboration of Lubomír Král
(4) with the collaboration of Udo Luy
(5) Information provided by Nebojša Jakovljević. Please visit his interesting website www.exyufudbal.in.rs and buy his book “Fudbalska Takmičenja Južnih Slovena”
(6) with the collaboration of Daniel Molnár
(7) with the collaboration of Martijn Schokkenbroek and Labinot Binaku
(8) the Federations of Artsakh, Abkhazia and Transnistria are not recognised by UEFA or FIFA (and neither are the states); inclusion of results here exclusively serves football statistical purposes
(9) the separation of Crimea from Ukraine is not recognised by UEFA or FIFA; inclusion of results here exclusively serves football statistical purposes; neither the Donetsk PR nor the Lugansk PR is recognised by UEFA or FIFA; inclusion of results here exclusively serves football statistical purposes; information provided by Mika Dryomin for the RSSSF
(10) Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan
(11) Isle of Man and Greenland information provided by Hans Schöggl for the RSSSF