Acciai is an Italian surname derived from the medieval Italian word accia, meaning "axe", which ultimately traces back to the Latin ascia. This etymological connection situates the name within the broad category of occupational surnames, likely referring to a maker of axes or to someone liable for paying tax on the account of an axe in feudal times. The meaning aligns with other Italian surnames based on tools, such as Acciaio (steel), reflecting the importance of metalworking in medieval Italy. The surname may also be linked to the prominent Florentine Acciaioli family, one of the most influential noble houses of the Renaissance. The Acciaioli rose to power in the 14th century, producing cardinals, bankers, and a duke of Athens, and the variant Acciai may serve as a simplified or nickname form. Usage of the name is most frequent in central and northern Italy, particularly in Tuscany and the Lombardy region. Shorter than Acciaiol or Acciaioli, Acciai appears as both a masculine and feminine surname in Italian recordkeeping, consistent with the "m or f by sense" designation. While specific earlier records are sparse, the 2015–2026 Mappa dei Cognomi maintained for Italian surnames indicates ongoing documentation efforts. The name's association with a medieval implement also makes it unique among Italian surnames, differentiating it from more common names like Martello (hammer) or Spada (sword). Meaning: axe Language: Italian Origin: occupational, derived from tool Region: primarily Tuscany and central-northern Italy Variants: Acciaio, Acciaioli