The Zaber (German: [ˈtsaːbɐ]) is a minor tributary of the River Neckar in Baden-Württemberg, Germany. It is some 22 km in length and joins the Neckar from the west at Lauffen am Neckar. It has given its name to the Zabergäu, the area between the Heuchelberg and Stromberg hills.

The first mention is from the year 793 as Zabernahgouwe (Zabernachgau). Traditionally it is assumed that the name is derived from the Latin word Taberna ("restaurant", "street station"). It is assumed that the Roman settlement in today's Meimsheim bore this name (similar to the Alsatian place Zabern) and that with time the place name was transferred to the surroundings or to the river. This theory is supported by the fact that there was a traffic junction in Roman Meimsheim and that the place was possibly of administrative importance for the region.

The region known as the Zabergäu, the area between the Heuchelberg and Stromberg hills, takes its name from the Zaber.

The Zaber rises in the district of Heilbronn about two kilometres south-southwest of Zaberfeld on the northern slope of the forested Stromberg (landscape). It flows initially into a reservoir known as the Ehmetsklinge. It subsequently flows in an easterly direction through Zaberfeld, Pfaffenhofen, Güglingen and Brackenheim before reaching the Neckar at Lauffen. The river is shallow and therefore not navigable.

Tributaries of the Zaber

Name	side of confluence	Length [km]	Basin size in km²	remaining Length in m	Location of confluence	elevation	Annotations
Zaber	–	22,4	113,8	–	Lauffen am Neckar	161
Lochwiesenbächle	left	01,1		20.614	in reservoir Ehmetsklinge (zus. 13,2 ha Nach LUBW-SG10.)	232
Ehmetsklingenbächle	left	02,6	002,3	20.359	in reservoir Ehmetsklinge	232	länger als Zaber
Riesenbach	left	03,2	004,9	19.692	Au W Zaberfeld	220
Dämmlesgraben	rechts	01,8		19.259	Zaberfeld, Herrenwiesenweg	218	im Dorf verdolt
Muttersbach	left	01,6	002,6	19.245	Zaberfeld, Herrenwiesenweg	218
Katzenbach	rechts	02,0	003,4	18.091	Sportgelände E Zaberfeld	212
Michelbach (Zaber)Michelbach	left	04,3	006,3	17.609	between Reisenmühle u. Weiler an der Zaber	203	flows first through a reservoir
(Bach aus der Steinenklinge)	rechts	01,3		16.671	Weiler an der Zaber, Bogersmühle	202
Benzbach	left	01,4		15.522	In front of road bridge in Pfaffenhofen	201	ab Dorfrand verdolt
Rodbach	rechts	02,2	002,2	15.311	Sportstätten in Pfaffenhofen	200	ab Dorfrand verdolt
(Zufluss aus der Leopoldsklinge)	rechts	01,5		14.577	Umspannwerk vor Güglingen	196
Flügelaubach	rechts	03,5	003,5	12.526	Güglingen, ggü. Sophienhof	194
Riedfurtbach	left	03,8	003,4	11.476	Mühle S Güglingen-Frauenzimmern	191
(Sägmühlkanal)	rechts	01,3		11.444	Mühle S Güglingen-Frauenzimmern	190	mit längerem Ast Balzhöfer Bach 2,635 km
Fürtlesbach	rechts	03,5	003,2	10.587	opposite the industrial estate Güglingen-Frauenzimmern	188
Wurmbach	left	04,0	007,3	09.928	wastewater treatment plant next to the border with Brackenheim	185
Forstbach	left	07,2	011,0	07.239	NSG Zaberauen von Meimsheim und Botenheim vor Brackenheim-Meimsheim	181
Herrenwiesenbach	rechts	07,4	011,1	06.738	uh. Zabergäubahn-bridge net to Brackenheim-Meimsheim	180
Truselbach	rechts	03,6		05.282	Brackenheim, Obere Schellenmühle
Neipperger Bächle	left	08,9	014,1	03.828	wastewater treatment plant before the Lauffener Neckarschlinge	170