Merovech (Latin: Meroveus or Merovius) (c. 415-457) is the semi-legendary founder of the Merovingian dynasty of the Salian Franks (although Chlodio may in fact be the founder), which later become the dominant Frankish tribe.

He allegedly lives in the first half of the fifth century.

His name is a Latinization of a form close to the Old High German given name Marwig, lit.

"famed fight" (cf.

māri "famous" + wīg "fight") compare modern Dutch mare "news, rumour", vermaard "famous" and vecht "fight".

The first Frankish royal dynasty calls hemselves Merovingians ("descendants of Meroveus") after him.