Reinert
A German surname that most likely developed as a shortened form of Reinhard or related names beginning with Rein- (“counsel, advice” + “hard, brave”).
The #6,269 most common surname in the United States (2010 Census) — about 1 in every 56,651 Americans shares it.
Etymology
Reinert is generally treated as a shortened or altered form of German names such as Reinhard, Reinhold, or Reinhart. The first element is the old Germanic rein- / ragin- idea of “counsel” or “advice,” while the second element means “hardy,” “strong,” or “brave.” In older surname scholarship, Reinert is therefore understood less as an independent creation than as a reduced form of a compound personal name.
History
The historical references here place Reinert alongside Reinhard, Reinhart, Reiner, and related names, which strongly suggests the surname arose through familiar German name-shortening patterns. Such forms became hereditary surnames in German-speaking areas and later spread through migration into North America and elsewhere. The modern U.S. presence reflects that wider German diaspora.
Origin
Regions
Variant spellings
Fun fact
19th-century surname writers often linked Reinert to the same name family as the Frankish royal name Raganhar/Reginhard, showing how deeply this root is embedded in old Germanic naming.
From the historical record
“Kaginhart: Rahnert — Regenhard — Reinhard; Reinert — Rienhardt; Rienth — Renard; Rehnert — Rennert. Gen. Rheitiharx; Rei-”
— Die deutschen Familiennamen