Mori
A surname with several possible roots, including a nickname for a dark-complexioned person or a place-based name tied to the sea or to the Moors.
The #7,831 most common surname in the United States (2010 Census) — about 1 in every 73,024 Americans shares it.
Etymology
The surname Mori is not explained by a single secure origin in the historical sources. Some evidence points to a nickname from the medieval word for a Moor or a dark-skinned person, related to forms like French "More" and "mauresque." Other traditions connect similar spellings to place names or older Celtic material containing the element for "sea" or "by the sea." Because the same spelling can arise from different languages and regions, Mori is best treated as a surname with multiple possible origins rather than one fixed source.
History
The sources suggest that forms like Mori, de Mori, and related spellings appear in medieval records across Britain and northern Europe, but they do not point to one single family line. In some cases the name may have been linked to appearance or ethnic nickname; in others it may reflect a locative or continental surname brought into local records. The spelling is also found in broader European surname traditions, especially in French and Italian contexts, which makes migration and independent formation likely.
Origin
Regions
Variant spellings
Fun fact
A related French usage, morisque, was once used for someone described as Moorish or very dark in complexion.
From the historical record
“Manriehu fiL Uaoricii, °1^^H Mori.-, 00. Bed Ricndaa Mocrinoo, 1370; P. T. Yorkip-iRt '^ WilliluD Hora”
— A Dictionary of English and Welsh Surnames, with special American instances