Alte Schlaube

{{short description|River in Germany}}{{Refimprove|date=November 2024}}{{Expand German|topic=geo|date=September 2011|Alte Schlaube}}

{{Infobox river

| name = Alte Schlaube

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| pushpin_map = Brandenburg

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| pushpin_map_caption= Location of mouth in Brandenburg

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| mouth_location = Brieskower See

| mouth_coordinates = {{coord|52.2596|N|14.5823|E|source:wikidata-and-enwiki-cat-tree_region:DE|display=it}}

| progression = {{ROder}}

| subdivision_type1 = Country

| subdivision_name1 = Germany

| subdivision_type2 = State

| subdivision_name2 = Brandenburg

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Alte Schlaube is a river of east Brandenburg, Germany.{{Cite web |date=24 March 2014 |title=Landesamt für Umwelt, Gesundheit und Verbraucherschutz Abteilung Ökologie, Naturschutz, Wasser (ÖNW) |url=https://fragdenstaat.de/anfrage/vollstandige-korrekte-ubersicht-aller-seen-und-gewasser-im-land-brandenburg-moglichst-im-pdf-format-oa-ersatzweise-in-gedruckter-form/15877/anhang/Fliegewsserverzeichnis.pdf |access-date=29 November 2024 |website=Frag den Staat |language=de}} It is the former lower course of the Schlaube. It discharges into the Brieskower See, which is connected to the Oder, near Brieskow-Finkenheerd.

The Alte Schlaube rises today near the Katharinengraben in Müllrose. From there it goes through Kaisermühl to the Groß Lindower district Schlaubehammer, where the Alte Schlaube crosses the Oder-Spree Canal. Near the residential area Hammerfort (located between the districts Schlaubehammer and Weißenspring), the Alte Schlaube flows into the Friedrich-Wilhelm-Kanal. The locks in Hammerfort and Weißenspring each have separate dams for the passage of the Alte Schlaube.