| Conflict and date | Combatant 1 | Combatant 2 | Result | Ruling King/Emperor |
| Otto I's raid on Poland (963) | Holy Roman Empire | Duchy of Poland | Victory | Otto I |
| Rebellion of Harald Bluetooth | Holy Roman Empire Norwegian Rebels | Kingdom of Denmark Kingdom of Norway | Victory | Otto II |
| Franco-German War of 978-980 | Holy Roman Empire | West Francia | Status quo ante bellum | Otto II |
| Otto II's raid on Poland | Holy Roman Empire | Civitas Schinesghe | Defeat | Otto II |
| Slavic revolt of 983 | Holy Roman Empire | Wends Lutici Obotrite | Defeat | Otto II |
| Polish-Saxon Invasion of Veleti (985) | Duchy of Poland
Holy Roman Empire | Veleti | Victory | Otto III |
| Polish-Bohemian War (990) | Duchy of Bohemia | Victory | Otto III |
| Polish-German invasion of Veleti (992) | Veleti | Victory | Otto III |
| Polish-German invasion of Obotrites (995) | Obotrites | Victory | Otto III |
| German–Polish War (1003–1018) | Holy Roman Empire | Duchy of Poland | Peace of Bautzen | Henry II |
| Bolesław I's intervention in the Kievan succession crisis (1015–1019) | Duchy of Poland
Holy Roman Empire Pechenegs | Kievan Rus' | Victory - Temporary victory for Sviatopolk and Boleslaw
- Polish sack of Kiev
| Henry II |
| German–Polish War (1028–1031) | Holy Roman Empire Kievan Rus' (from 1030)
Kingdom of Hungary (1031) | Kingdom of Poland
Kingdom of Hungary (1029–1031) | Victory | Conrad II |
Emperor Conrad II's military campaign against Hungary (1030–1031) | Holy Roman Empire | Kingdom of Hungary | Defeat - The Hungarians occupied Vienna
| Conrad II |
| German-Hungarian Wars (1042–1043) | Holy Roman Empire | Kingdom of Hungary | Victory | Henry III |
| Henry III's military campaign against Hungary (1044) | Holy Roman Empire Peter Orseolo and his allies | The army of King Samuel Aba | Victory - Defeat of Samuel Aba, restoration of Peter
| Henry III |
| War between King Peter and Prince Andrew (1046) | King Peter's army Holy Roman Empire | Prince Andrew's army Kievan Rus' | Defeat | Henry III |
| Emperor Henry III's military campaigns against Hungary (1051–1052) | Holy Roman Empire Duchy of Bohemia | Kingdom of Hungary | Defeat | Henry III |
| German-Hungarian border War (1056–1058) | Holy Roman Empire | Kingdom of Hungary | Stalemate | Henry IV |
| Civil War between King Andrew I and his brother, Prince Bela (1060) | King Andrew I's army Holy Roman Empire | Prince Béla's army Kingdom of Poland | Defeat | Henry IV |
| German invasion of Hungary (1063) | Holy Roman Empire | Kingdom of Hungary | Victory | Henry IV |
| Saxon revolt of 1077–1088 | Holy Roman Empire | German rebels | Victory | Henry IV |
| German-Flemish war | Holy Roman Empire | County of Flanders | Status quo ante bellum | Henry V |
| Henry V's expedition to Poland | Holy Roman Empire
Duchy of Bohemia | Kingdom of Poland | Defeat | Henry V |
| War of Bohemian Succession (1125–1140) | Holy Roman Empire | Duchy of Bohemia | Defeat | Lothair III |
| Wars of the Guelphs and Ghibellines | Ghibellines' | Guelphs' | 1st phase:Peace of Constance (1186) 2nd phase:Stalemate (1392) | Frederick I Barbarossa Frederick II Henry VII Louis IV |
| German–Polish War | Holy Roman Empire Duchy of Bohemia | Mieszko III the Old | Mieszko III the Old's victory/Roman defeat | Conrad III of Germany |
| Wendish Crusade (1147) | | | Victory - March of Brandenburg reconquers Havelberg, County of Holstein expels its Wends
| Conrad III of Germany |
| Second Crusade (1147–1150) | Holy Roman Empire Other Crusaders | Emirate of Damascus other Muslim and Pagan entities in East Central Europe, Iberia and the Near East. | Victories in East Central Europe and Iberia. Defeat in the Holy Land. | Conrad III of Germany |
| Frederick I's expedition to Głogów | Holy Roman Empire
Duchy of Bohemia | Kingdom of Poland
Cumania Old Prussians | Victory | Frederick I Barbarossa |
| Henry VI's conquest of Sicily | Holy Roman Empire | Kingdom of Sicily | Victory | Henry VI |
| Third Crusade (1189–1192) | Holy Roman Empire Other Crusaders | Ayyubids | Small Gains for the Crusaders. Jerusalem stays under Ayyubid control. | Frederick I Barbarossa |
| Fourth Crusade (1202–1204) | Crusaders from: Republic of Venice | In Europe: | Victory | Otto IV |
| Prussian Crusade | Holy Roman Empire Other Crusaders | Baltic pagans: Allies of Prussians: | Victory - Teutonic Knights gain control of Prussia
| Frederick II |
| Fifth Crusade (1217–1221) | Crusaders: Levant: Military orders: | Muslim forces: | Defeat | Frederick II |
| Anglo-French War (1213–1214) | Angevin Empire Holy Roman Empire
County of Flanders County of Boulogne | Kingdom of France | Defeat | Otto IV |
| Sixth Crusade (1227–1229) | Holy Roman Empire including in Personal Union: | Ayyubids | Kingdom of Jerusalem regains Jerusalem through peaceful negotiations. | Frederick II |
| War of the Lombards | Holy Roman Empire
Pro-Imperial faction in the Kingdom of Jerusalem
Principality of Antioch and County of Tripoli
Republic of Pisa
Knights Hospitaller
Teutonic Knights | Kingdom of Cyprus
Anti-Imperial faction in the Kingdom of Jerusalem
Republic of Genoa
Knights Templar
Papacy | Defeat | Frederick II |
| Great Interregnum[1] 1245/50–1273/5 | Hohenstaufen party | Welf party | Compromise |
| Hussite Wars (1419–1434) | Catholic Church, Crusades and Loyalists: Holy Roman Empire | Bohemian Wars: Hussite Movement | Eventual defeat for Radical Hussites, Victory for Moderate Hussites and Catholics | Sigismund |
| Austrian–Hungarian War (1477–1488) | Holy Roman Empire | Kingdom of Hungary | Defeat | Frederick III |
| Austrian–Hungarian War (1490–91) | Holy Roman Empire | Kingdom of Hungary | Victory | Frederick III |
| Italian War of 1494–1498 | 1494:
Kingdom of Naples 1495: League of Venice
Papal States
Republic of Venice
Kingdom of Naples
Kingdoms of Spain
Duchy of Milan
Holy Roman Empire
Republic of Florence England (1496–98)
Margraviate of Mantua Republic of Genoa | Kingdom of France Duchy of Milan (before 1495) Duchy of Ferrara (officially neutral) | Victory | Maximilian I |
| Swabian War (1499) | Holy Roman Empire Swabian League | Old Swiss Confederacy Three Leagues of the Grisons | Swiss Victory Peace of Basel | Maximilian I |
| Italian War of 1521–1526 | Holy Roman Empire
Spain
England
Papal States (1521–1523 and 1525–1526) | France Republic of Venice
Papal States (1524–1525) Marquisate of Saluzzo | Victory | Charles V |
| War of the League of Cognac (1526–1530) | Pro-Habsburg: | League of Cognac: | Victory | Charles V |
| Little War in Hungary (1526–1568) | Holy Roman Empire Royal Hungary
Kingdom of Croatia
Spain
Papal States | Ottoman Empire
John Szapolyai's Hungarian kingdom | Defeat | Charles V |
| Conquest of Tunis (1535) | Spanish Empire Holy Roman Empire
Kingdom of Portugal
Papal States
Knights of Malta | Ottoman Empire
Kingdom of France | Habsburg and allied victory - Sack of Tunis
- Muley Hassan of the Hafsid dynasty restored as client ruler of Tunis and Spanish-Imperial tributary.
| Charles V |
| Italian War of 1536–1538 | Holy Roman Empire
Spain | Kingdom of France
Ottoman Empire | Truce of Nice | Charles V |
| Italian War of 1542–1546 | Holy Roman Empire Saxony Brandenburg Spain England | France Ottoman Empire Jülich-Cleves-Berg
Denmark-Norway (1542–1543) | Inconclusive | Charles V |
| Schmalkaldic War 1546–1547 | Holy Roman Empire Habsburg Spain
Habsburg Hungary Supported by:
Papal States | Schmalkaldic League: Supported by:
England | Victory | Charles V |
| Second Schmalkaldic War March–August 1552 | Imperial–Habsburg forces Holy Roman Empire | Protestant princes | Protestant victory | Charles V |
| Long Turkish War (1593–1606) | | Ottoman Empire | Inconclusive | Rudolph II |
| War of the Jülich Succession (1609–1614) | 1609–1610:
Holy Roman Empire
Principality of Strasbourg
Prince-Bishopric of Liège
Catholic League | 1609–1610:
Margraviate of Brandenburg
Palatinate-Neuburg
United Provinces
Kingdom of France Protestant Union | Treaty of Xanten | Rudolph II Matthias |
| War of the Montferrat Succession | Supporting the Duke of Mantua:
Duchy of Mantua
Montferrat
Tuscany (1613)
Spanish Empire
France (1613–14)
Holy Roman Empire
Kingdom of Naples
Genoa | Supporting the Duke of Savoy:
Duchy of Savoy
Montferrat
Tuscany (1613)
France (1615–17)
Venice | Victory | Matthias |
| Uskok War | Holy Roman Empire
Kingdom of Croatia
Spain | Republic of Venice
Dutch Republic
England | Treaty of Madrid (1617) - Many Uskok pirates executed or exiled; Austrian garrison installed to check Uskoks.
| Matthias |
| Thirty Years' War 1618–1648 | Imperial alliance prior to 1635[a] Post–1635 Peace of Prague | Anti-Imperial alliance prior to 1635[b] Post–1635 Peace of Prague | - Consequences
| Ferdinand III |
| Upper Austrian peasant war of 1626 | Holy Roman Empire
Bavaria | Austrian Rebels | Victory | Adam Von Herberstorff |
| Austro-Turkish War (1663–1664) | League of the Rhine: Kingdom of France Holy Roman Empire Piedmont-Savoy Kingdom of Hungary Kingdom of Croatia Polish–Lithuanian Commonwealth | Ottoman Empire | Peace of Vasvár | Leopold I |
| Franco-Dutch War (1672–1678) | | | Treaty of Nijmegen | Leopold I |
| War of the Reunions | Spain Co-belligerent:
Holy Roman Empire
Genoa | France | Defeat | Leopold I |
| Great Turkish War (1683–1699) | Holy Roman Empire Polish–Lithuanian Commonwealth
Tsardom of Russia
Republic of Venice
Spanish Empire | Ottoman Empire | Victory - Treaty of Karlowitz
- The Habsburg monarchy wins lands in Hungary, the Principality of Transylvania and the Balkans.
- Poland-Lithuania captures Podolia.
- Russia captures the port of Azov.
- Venice captures Morea and inner Dalmatia.
| Leopold I |
| Nine Years War (1688–1697) | Holy Roman Empire Dutch Republic England Scotland Spanish Empire Duchy of Savoy Portuguese Empire Swedish Empire (until 1691) | France | Treaty of Ryswick | Leopold I |
| War of the Spanish Succession (1701–1714) | Holy Roman Empire Austrian Monarchy Dutch Republic Prussia England (until 1707) Great Britain (from 1707) Piedmont-Savoy Habsburg Spain Portugal | France Spanish monarchy Bavaria (until 1704) Cologne (until 1702) Mantua (until 1708) | Treaties of Utrecht (1713), Rastatt (1714) and Baden (1714) - Philip is recognized as King of Spain, but once more renounces any claim to the throne of France
- Austria gains the crowns of Naples and Sardinia as well as the duchy of Milan and the Spanish Netherlands
- Savoy gains the crown of Sicily which is soon to be exchanged with Sardinia
| Leopold I Joseph I Charles VI |
| Rákóczi's War of Independence | - Swiss
- Germans
- Italians
- Spaniards
| Foreign mercenaries and volunteers: | Victory | Leopold I Joseph I Charles VI |
| War of the Polish Succession (1733–1735) | Holy Roman Empire Russia Poland Loyal to Augustus III | France Spain Savoy-Sardinia Duchy of Parma Sweden Poland Loyal to Stanislaus I | Treaty of Vienna | Charles VI |
| Liège Revolution (1789–1791) | Holy Roman Empire Prince-Bishops of Liège | Liège Rebels Brabant Rebels Republic of Liège Supported by:Prussia | Foundation of Liège Republic (1789); reversion to Prince-Bishopric(1791); annexation by France (1795) | Leopold II |
War of the First Coalition (mostly the Low Countries theatre) 1792–1797 | First Coalition:
Dutch Republic
Holy Roman Empire Great Britain Spanish Empire (1793–95) | Kingdom of the French (1792)
French First Republic (from 1792) Spanish Empire (1796–97) | French Republican victory | Francis II |
| War of the Second Coalition 1798–1802 | | Spanish Empire | French victory | Francis II |
| War of the Third Coalition 1803–1806 (part of the Napoleonic Wars) | | | French victory | Francis II |