This is a list of tributaries of the Danube by order of entrance.
The Danube is Europe's second-longest river. It starts in the Black Forest in Germany as two smaller rivers - the Brigach and the Breg - which join at Donaueschingen, and it is from here that it is known as the Danube, flowing generally eastwards for a distance of some 2850km (1,770miles), passing through several Central and Eastern European capitals, before emptying into the Black Sea via the Danube Delta in Romania.
The Danube flows through - or forms a part of the borders of - ten countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine; in addition, the drainage basin includes parts of nine more countries: Poland, Switzerland, Italy, Czech Republic, Slovenia, Bosnia and Herzegovina, Montenegro, North Macedonia and Albania.
| River | Entering the Danube at | Distance from mouth (Sulina) (km) | Side of the entrance | Length (km) | |
|---|---|---|---|---|---|
| Breg (right main headwater) | Donaueschingen | 2810 | right | 46 | |
| Brigach (left main headwater) | Donaueschingen | 2810 | left | 43 | |
| Lauchert | Sigmaringendorf | left | 56 | ||
| Riss | Rißtissen | right | 50 | ||
| Rot | Dellmensingen | right | 54 | ||
| Iller | Ulm | right | 147 | ||
| Roth | Oberfahlheim | right | 55 | ||
| Günz | Günzburg | right | 55 | ||
| Mindel | Gundremmingen | right | 78 | ||
| Brenz | Lauingen | left | 55 | ||
| Wörnitz | Donauwörth | 2509 | left | 132 | |
| Zusam | Donauwörth | 2508 | right | 97 | |
| Schmutter | Donauwörth | 2508 | right | 96 | |
| Lech | Marxheim (near Donauwörth) | right | 264 | ||
| Friedberger Ach | Unterhausen | right | 100 | ||
| Paar | near Vohburg | 2443 | right | 134 | |
| Abens | near Neustadt (Donau) | right | 53 | ||
| Altmühl | Kelheim | 2414.68 | left | 23 | |
| Hopfenbach | Kelheim | 2410.67 | right | ||
| Schwarze Laber | Sinzing | 2387.9 | left | 77 | |
| Naab | Regensburg | 2385.3 | left | 165 | |
| Regen | Regensburg | 2379.24 | left | 165 | |
| Sulzbach | Donaustauf | 2367.5 | left | ||
| Otterbach | Donaustauf | 2367.6 | left | 22.5 | |
| Pfatter | Pfatter | 2349.31 | right | 33 | |
| Wiesent | Niederachdorf | 2346.43 | left | 25 | |
| Große Laber | near Straubing | 2329.51 | right | 74 | |
| Aiterach | Straubing | right | 39 | ||
| Kinsach | Bogen | 2309 | left | 38.5 | |
| Isar | near Deggendorf | 2281.71 | right | 286 | |
| Hengersberger Ohe | Winzer | 2264.21 | left | 34 | |
| Vils | Vilshofen | 2248.63 | right | 69 | |
| Gaißa | Passau-Schalding | 2233.85 | left | ||
| Ilz | Passau | 2225.43 | left | 37 | |
| Inn | Passau | 2225.2 | right | 517 | |
| Satzbach | Thyrnau | 2221.3 | left | ||
| Kößlbach | Freinberg | 2218.0 | right | ||
| Erlau | Erlau | 2215.15 | left | ||
| Dandlbach | Neustift im Mühlkreis | 2201.77 | left | ||
| Ranna | Niederranna | 2196.04 | left | ||
| Kleiner Kösslbach | Niederranna | 2194.55 | right | ||
| Kleine Mühl | Kirchberg ob der Donau | 2177.85 | left | 36 | |
| Große Mühl | Untermühl | 2168.0 | left | 70 | |
| Innbach | Wilhering | right | 53 | ||
| Rodl | Ottensheim | 2144.83 | left | ||
| Bleicherbach | Ottensheim | 2143.35 | left | ||
| Traun | near Linz | 2124.73 | right | 153 | |
| Ipfbach | Asten | 2116.98 | right | ||
| Gusen | Mauthausen | 2113.6 | left | ||
| Enns | Mauthausen | 2111.828 | right | 254 | |
| Aist | Naarn im Machlande | 2108.5 | left | ||
| Ysper | Isperdorf | 2065.7 | right | ||
| Ybbs | Ybbs an der Donau | 2057.1 | right | 13 | |
| Erlauf | Pöchlarn | 2046.3 | left | 70 | |
| Melk | Melk | right | |||
| Pielach | Melk | 2034.35 | right | 70 | |
| Aggsbach | Aggsbach | 2027.17 | right | ||
| Endlingbach | Aggsbach | 2026.97 | left | ||
| Spitzer Bach | Spitz | 2019.58 | left | ||
| Fladnitzbach | Palt | 2000.6 | right | ||
| Krems | Altenwörth | left | 65 | ||
| Traisen | Altenwörth | 1979.1 | right | ||
| Kamp | Altenwörth | left | 168 | ||
| Perschling | Zwentendorf | 1972.1 | right | ||
| Große Tulln | Tulln an der Donau | 1965.27 | right | ||
| Schmida | Korneuburg | left | 74 | ||
| Wien | Vienna | right | |||
| Schwechat | Upstream of Schönau | 1913.7 | right | ||
| Fischa | Fischamend | right | |||
| Rußbach | near Hainburg an der Donau | 1881.2 | left | 71 | |
| Morava | Devín | 1880.26 | left | 358 | |
| Vydrica | Bratislava | 1871.5 | left | ||
| Leitha | near Mosonmagyaróvár[1] | 1793.0 | right | 18 | |
| Rába | Győr[2] | 1793.0 | right | 322 | |
| Concó | Ács | 1777.0 | right | ||
| Váh | Komárno | 1765.8 | left | 403 | |
| Hron | near Štúrovo | 1716.0 | left | 298 | |
| Ipeľ | near Szob | 1708.2 | left | 232 | |
| Lepence | Visegrád | 1697.0 | right | ||
| Benta | Százhalombatta | 1621.75 | right | ||
| Sió | near Szekszárd | 1497.15 | right | 121 (360)[3] | |
| Drava | near Osijek | 1382.5 | right | 725 | |
| Vuka | Vukovar | 1333.1 | right | 114 | |
| Tisza | near Titel | 1214.5 | left | 965 | |
| Sava | Belgrade | 1170 | right | 990[4] | |
| Timiș | Pančevo | 1154.2 | left | 359 | |
| Jezava | Smederevo | 1115.2 | right | ||
| Velika Morava | near Smederevo | 1104.5 | right | 185 (493, 550)[5] | |
| Mlava | near Kostolac | 1091.6 | right | 158 | |
| Karaš | near Banatska Palanka | 1076.5 | left | 11 | |
| Nera | near Banatska Palanka | 1075.0 | left | 143 | |
| Belobreșca | left | 8 | |||
| Șușca | left | 7 | |||
| Pek | Veliko Gradište | 1057.1 | right | 129 | |
| Radimna | left | 27 | |||
| Pojejena | left | 9 | |||
| Pârva | Upstream of Moldova Veche | 1050.9 | left | 8 | |
| Boșneag | Moldova Veche | 1045.3 | left | 12 | |
| Tumanska reka | Usije | right | |||
| Liborajdea | Liborajdea | 1031.9 | left | 8 | |
| near Dobra | 1026.8 | right | |||
| Camenița | Gornea | 1025.7 | left | 14 | |
| Orevița | Liubcova | 1022.9 | left | 25 | |
| Dobranska reka | Dobra | 1021.0 | right | ||
| Berzasca | Berzasca | 1017.8 | left | 46 | |
| Kožica | near Dobra | right | |||
| Sirina | Downstream of Cozla | 1012.1 | left | 22 | |
| Pesača | 1009.4 | right | |||
| Poloseva (Eliseva) | 1007.3 | left | 8 | ||
| Boljetinska reka | 1003.2 | right | |||
| Strenica | left | 7 | |||
| Zlatica | 992.8 | right | |||
| Porečka | Donji Milanovac | 988.2 | right | 5 | |
| Lut | 988 | left | 8 | ||
| Tișovița | near Eibenthal | 982.6 | left | 16 | |
| Hlubotina | 979.7 | left | 8 | ||
| Plavișevița | 976.2 | left | 9 | ||
| Valea Morilor | left | 11 | |||
| Valea Satului | Dubova | left | 7 | ||
| Mraconia | near Dubova | 967.0 | left | 19 | |
| Valea Satului | Upstream of Eșelnița | left | 7 | ||
| Mala | Upstream of Eșelnița | 961.4 | left | 12 | |
| Eșelnița | Eșelnița | 959.7 | left | 26 | |
| Cerna | Orșova | 953.2 | left | 79 | |
| Bahna | near Ilovița | 949.8 | left | 35 | |
| Dževrin | Novi Sip | 949.2 | right | ||
| Vodița | near Ilovița | left | 9 | ||
| Kašajna | Davidovac | 946.8 | right | ||
| Jidoștița | Gura Văii | left | 19 | ||
| Kladušnica | Kladušnica | 936.8 | right | ||
| Topolnița | Drobeta-Turnu Severin | 927.8 | left | 44 | |
| Băran | near Bistrița | left | 6 | ||
| Vratna | Slatina | 879 | right | ||
| Blahnița | Balta Verde | left | 56 | ||
| Timok | Bulgarian-Serbian border | 845.65 | right | 203 | |
| Drincea | Cetate | left | 79 | ||
| Topolovets | near Vidin | 784.1 | right | 68 | |
| Voynishka | Dunavtsi | 782.2 | right | 55 | |
| Vidbol | Dunavtsi | 780.2 | right | 62 | |
| Archar | Archar | 768.5 | right | 59 | |
| Skomlya | near Dobri dol | 762.5 | right | 42 | |
| Lom | Lom | 741.7 | right | 93 | |
| Balasan | near Catane | left | 51 | ||
| Desnățui | Bistreț | left | 115 | ||
| Tsibritsa | Dolni Tsibar | 715.85 | right | 91 | |
| Jiu | near Bechet | 691.55 | left | 339 | |
| Ogosta | between the Jiu's mouth and Oryahovo | 684.5 | right | 143 | |
| Jieț | Bechet | 681 | left | 52 | |
| Iskar | Gigen | 637.0 | right | 368 | |
| Ursa | Gârcov | left | 11 | ||
| Vit | Somovit | 609.5 | right | 188 | |
| Olt | Turnu Măgurele | 604.0 | left | 615 | |
| Sâi | Turnu Măgurele | 600.6 | left | 85 | |
| Osam | Nikopol, Bulgaria | 600.1 | right | 314 | |
| Călmățui | Suhaia | left | 139 | ||
| Pasărea | Zimnicea | left | 19 | ||
| Vedea | Bujoru | left | 224 | ||
| Yantra | Svishtov | 536.7 | right | 285 | |
| Parapanca | Slobozia | left | 29 | ||
| Rusenski Lom | Ruse | 497.8 | right | 45 (196.9)[6] | |
| Oncești | near Gostinu | left | 9 | ||
| Zboiul | near Oltenița | left | 28 | ||
| Argeș | Oltenița, Romania | 430.0 | left | 350 | |
| Mostiștea | Dorobanțu | left | 98 | ||
| Berza | Bogata | left | 26 | ||
| Almălău | Galița | right | 20 | ||
| Canlia | Canlia | right | 8 | ||
| Canaraua Fetei | Oltina | right | 16 | ||
| Jegălia | Jegălia | left | |||
| Valea Mare | Dunăreni | right | 29 | ||
| Urluia | Rasova | right | 98 | ||
| Valea Rasovei | Rasova | right | |||
| Peștera | Cochirleni | right | 26 | ||
| Țibrin | Seimeni | right | 41 | ||
| Dunărea | Dunărea | right | 23 | ||
| Calachioi | Capidava | right | |||
| Chichirgeaua | Tichilești | right | 17 | ||
| Ialomița | Near Hârșova | left | 417 | ||
| Călmățui | Berteștii de Jos | left | 152 | ||
| Topolog | Saraiu | right | 50 | ||
| Nămolești | Gârliciu | right | 20 | ||
| Valea Roștilor | Ostrov | right | 28 | ||
| Peceneaga | Peceneaga | right | 19 | ||
| Cerna | near Peceneaga | right | |||
| Greci | near Turcoaia | right | 13 | ||
| Jilila | Lake Jijila | right | 14 | ||
| Siret | Galați, Romania | 155.05 | left | 647 | |
| Prut | near Reni, Ukraine | 134.144 | left | 953 | |
| Gârla Ciulineț | Rachelu | right |