Mosier
A surname with a likely German or French background, often treated as a variant of names meaning “miller” or a place-based family name.
The #4,157 most common surname in the United States (2010 Census) — about 1 in every 36,229 Americans shares it.
Etymology
Mosier is usually explained as an altered spelling of a continental European surname, especially one brought into English by immigration and later reshaped in American records. In some cases it is linked to German names related to mills or millers, while in others it may reflect a French or German place-based name that was simplified in spelling and pronunciation. Because the documentary trail is mixed, the exact root can vary from family to family.
History
The surname appears in North America mainly through German-speaking and French-speaking immigrant lines, where spellings often shifted as families settled in English-speaking communities. In the United States, Mosier also became established as a fixed surname in its own right, rather than only as a spelling variant. The name is uncommon but widely enough distributed to suggest multiple independent branches.
Origin
Regions
Variant spellings
Fun fact
Mosier can overlap with the better-known surname Moser, so two families with the same modern spelling may not share the same original meaning.