US Popularity Rank: 11567

Origin: Gaelic

Meaning: Dark; black

Typically used as a nickname, Duff could also be the perfect choice for fans of The Simpsons (if you know, you know). This Irish and Scottish boy’s moniker is derived from the Gaelic term dubh, meaning “black” or “dark.” Duff follows the trend of four-letter names and is also a lovely little connection to your ancestral roots.