Niger

Niger (a major river in West Africa that flows into the Gulf of Guinea in Nigeria)


Senegal

Senegal (a river on the border between Senegal and Mauritania in West Africa)


Congo

Democratic Republic of the Congo#English

Republic of the Congo
Republic of the Congo#English

Congo (a major river in Central Africa which flows for about 4,380 km (2,720 miles) to the Atlantic Ocean in the Democratic Republic of the Congo, at times forming the border with the Republic of the Congo and Angola)


Paraná

Borrowed from Spanish Paraná or Portuguese Paraná, both from Old Tupi paranã (“river”).

Paraná (a river in central and southern South America)


Lao

From Latin Laus, from Ancient Greek Λαός (Laós), likely ultimately from Proto-Indo-European *lewh₃- (“to wash”), common in hydronyms. The first vowel may have derived from an O-grade or from the zero-grade, depending on the language it was borrowed through.


Ticino

Ticino (a left tributary of the Po in Switzerland and Italy)


Murray

Unadapted borrowing from English Murray.

a placename:
a major river in southeastern Australia

a minor river in Stewart Island, New Zealand


Missouri

Missouri, Missouri River (the longest river in North America, rising in the Rocky Mountains of western Montana and flowing roughly southeast over 2,300 miles through North Dakota, South Dakota, Nebraska, Iowa, Kansas and Missouri, before joining the Mississippi at St. Louis)


Mississippi

Mississippi River
Mississippi River#English

Mississippi, Mississippi River (a major river in the United States, flowing southward from north-central Minnesota through Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Minnesota and Louisiana, emptying into the Gulf of Mexico)


Don

Don (a river, the fifth-longest in Europe, in Tula, Lipetsk, Voronezh, Volgograd and Rostov Oblasts, Russia, flowing 1160 miles to the Sea of Azov)


Orange

From French Orange, from Old French Orenge, from Medieval Latin Aurasica, from Latin Aurasiō, from Gaulish.


Po

Ultimately from Latin Padus, perhaps borrowed in this form from some Gallo-Italic variety to judge by the loss of /-d-/. On the other hand, should one assume that said loss occurred (irregularly) in Tuscany, the sound-changes from that point onward would be fairly straightforward: /ˈpa.o/ > /ˈpaw/ > /ˈpɔ/.


Stella

Friuli-Venezia Giulia
Friuli-Venezia Giulia#English


Volga

Volga (a river in Russia, the longest river in Europe, flowing 2,325 miles through western Russia to the Caspian Sea)


Limpopo

Limpopo, Limpopo River (a river in Southern Africa whose source is at the border of South Africa and Botswana near Johannesburg and which flows about 1,770 km (1,100 miles) through South Africa, Botswana, Zimbabwe and Mozambique to the Indian Ocean)


Adige

From Latin Athesem, presumably borrowed via Gallo-Italic.


Chandler

Unadapted borrowing from English Chandler.

ubor

a river
a river in Alaska, United States

a river
a river in New South Wales, Australia


Morava

Borrowed from Czech Morava, from Latin Marus.

Morava (a left tributary of the Danube in Central Europe, flowing through Moravia in the Czech Republic on the border with Slovakia and then along the border of Austria)

Morava, Great Morava (a river in central Serbia; in full, Great Morava)


Giordano

Borrowed from Latin Iordanus, from Hebrew יַרְדֵּן (yardén).

Jordan (a river in Western Asia, in the Middle East, that empties into the Dead Sea, flowing through Israel, the Golan Heights, the West Bank and Jordan)


Loira

Loire (the longest river in France, passing (from southeast to northwest) through the departments of Ardèche, Haute-Loire, Loire, Saône-et-Loire, Allier, Nièvre, Cher, Loiret, Loir-et-Cher, Indre-et-Loire, Maine-et-Loire and Loire-Atlantique)


Mosella

Moselle (a left tributary of Rhine, flowing through the departments of Vosges, Meurthe-et-Moselle and Moselle in northeastern France, through Luxembourg, and through the states of Rhineland-Palatinate and Saarland, Germany)


Vandea

Vendée (a right tributary of the Sèvre Niortaise in western France, flowing through the departments of Deux-Sèvres, Vendée and Charente-Maritime)


Rodano

Rhone, Rhône (a major river in Switzerland and France that flows from the Alps to the Mediterranean Sea)


Elba

From Old High German Elba, descending from Proto-Germanic *albī (“river”).

Elbe (a major river in central Europe that passes through the Czech Republic and Germany before flowing into the North Sea)


Mosa

From Latin Mosa, from Celtic, deriving from Proto-Celtic *mosā.

Meuse, Maas (a major river that flows about 901 km (560 mi) from France through Belgium and the Netherlands to the North Sea)


Marna

Marne (a right tributary of the Seine, in eastern France, flowing 319 miles east and southeast of Paris through the departments of Haute-Marne, Marne, Aisne, Seine-et-Marne, Seine-Saint-Denis and Val-de-Marne)


Scamandro

From Latin Scamander, from Ancient Greek Σκάμανδρος (Skámandros).


Acquacheta

Acquacheta (a river that flows through Tuscany and Emilia-Romagna, Italy)


Piave

a river in Veneto that was the scene of heavy fighting in World War I


Dordogna

Dordogne (a long river in south-central and southwestern France, emptying into the Gironde estuary, flowing through the departments of Puy-de-Dôme, Corrèze, Lot, Dordogne and Gironde)


Venoge

a river in Switzerland that flows into Lake Geneva


Lonza

a river in Switzerland that is a tributary of the Rhone


Adda

a tributary of the river Po in northern Italy


Guadiana

Borrowed from Spanish Guadiana, from Old Spanish Aguadiana, derived from Arabic وَادِي (wādī, “river, valley”) + Latin Anās (ancient name of the river), related to anas (“duck”).

Guadiana (a major river in Spain and Portugal)


Isarco

Trentino-Alto Adige
Trentino-Alto Adige#English


Enza

Borrowed from Emilian, from Latin Incia.
The given name is Enzo + -a, ultimately of Germanic origin.


Chiese

From Latin Clesis, variation of Clūsius.


Dora Riparia

From Latin Duria. "Riparia" comes from Ripa, the name of an affluent, and it's used to distinguish this river from the Dora Baltea.


Simeto

From Latin Symaethus, from Ancient Greek Σύμαιθος (Súmaithos).


Alcantara

Borrowed from Arabic اَلْقَنْطَرَة (al-qanṭara, “the bridge”).

bor+

اَلْقَنْطَرَة


Anapo

From Latin Anapus, from Ancient Greek Ἄναπος (Ánapos).


Ciane

From Latin Cyane, from Ancient Greek Κυάνη (Kuánē).


Ippari

From Latin Hipparis, from Ancient Greek Ἵππαρις (Hípparis).


Naro

Disputed. Theorized origins include:
* Ancient Greek ναρόν (narón, “current”)
* Ancient Greek νηρόν (nērón) / νερόν (nerón), both meaning "water"
* Arabic نَهَر (nahar, “river”)


Imera

From Latin Himera, from Ancient Greek Ἱμέρα (Himéra).


Tirso

From Latin Thyrsus, from Ancient Greek Θύρσος (Thúrsos).


Fiume Azzurro

From fiume (“river”) + azzurro (“azure”).


Fiume Giallo

Yellow River, Huang He (a major river in northern China, passing through Qinghai, Sichuan, Gansu, Shaanxi, Shanxi, Henan and Shandong provinces as well as Ningxia and Inner Mongolia Autonomous Regions)


Soligo

a river in Veneto, from the name of the village it crosses


Miscano

From the earlier form Misclanu (attested since 10th century). Further etymology unknown.


Corno

From corno, because of the shape of its course.


Clitunno

a small river in Umbria, famous for its springs


Dittaino

From Arabic وَادِي التِين (wādī t-tīn, literally “clay river”).

uder

وَادِي التِين


Gornalunga

Italianized after Sicilian Gurnalonga, from gurna (small body of water) + longa (long).


Farfa

From Latin Farfarus, another name of the river Fabaris.


Mazaro

From Latin Mazarus, alternative form of Mazara.


Lenne

A toponym for rivers and settlements in Germany


Bagni

Bagni (a stream in Lamezia Terme, Catanzaro, Calabria, Italy)