The Michelsbach is a tributary of the Rhine in the German region of South Palatinate.

The Michelsbach's nominal start is the confluence of the Erlenbach and Otterbach in Leimersheim, but the Otterbach is officially not counted within its catchment area, but seen as a tributary of the Rhine.

On the other hand, the Klingbach which joins it from the north and is roughly equally in volume (and also the Erlenbach) is counted as a tributary of the Michelsbach.

In doing so it passes through the municipalities of Leimersheim and Hördt as well as the Hördter Rheinaue nature reserve.

However, the stream has several forks as it makes its way northwards, some of which are dead ends.