This is a list of the countries in the timeline Republic of St. Mark. The nations featured in this list are different from their OTL versions.
| Name | Flag | CoA | Capital | Type | Ruler(s) |
|---|---|---|---|---|---|
| Republic of Venice |  |
Venice | Federal semi-presidential "crowned" republic | Luca Zaia, Doge of Venice | |
| Republic of Liguria |  |
 |
Genoa | Unitary parliamentary republic | Giovanni Toti, President of Liguria |
| Kingdom of Rome |  |
 |
Rome | Unitary parliamentary monarchy with theocratic features | Lucrezia II, Queen of Rome |
| Duchy of Milan |  |
 |
Milan | Unitary parliamentary monarchy | Ludovico V Sforza, Duke of Milan |
| Kingdom of the Two Sicilies |  |
 |
Naples | Unitary parliamentary constitutional monarchy | Julius II Farnese, King of the Two Sicilies |
| Kingdom of Macedonia |  |
 |
Thessaloniki | Unitary parliamentary constitutional monarchy | Mark II, King of Macedonia |
| Republic of Achaea |  |
 |
Athens | Unitary parliamentary republic | Council of Twelve
(Chariman - Kostas Bakoyannis) |
.svg.png){kind=link}