Countries of Europe: Austria·Belarus·Czech Republic·Denmark·Finland·France^‡·Georgia^‡·Germany·Greece·Hungary·Italy·Luxembourg·Netherlands^‡·Norway·Poland·Portugal^‡·Romania·Russia^‡·Slovenia·Spain^‡·Sweden·Switzerland·Ukraine·United Kingdom
Nations of the United Kingdom: England·Scotland
^‡: partly located in Europe

<nowiki>Italia en 1818; 1818 в Італії; 1818 en Italie; 1818 ഇറ്റലിയിൽ; 1818 in Italy; 1818 i Italien; 1818年意大利; 1818 in Italia; Eventi relativi all'Italia durante l'anno 1818; Italy-related events during the year of 1818; Événements liés à l'Italie au cours de l'année 1818; gebeurtenis in jaar</nowiki>