Gauci is a surname in use mainly in the Republic of Malta belonging to one of the most ancient and noble families on the island.
However, according to Professor Joseph Aquilina, Malta's foremost specialist in Maltese etymology and author of the encyclopaedic Maltese–English Dictionary, the surname is a Maltese original formation, originating in the medieval notarial transcription of the word "Għawdxi", meaning Gozitan or from the island of Gozo.
This origin would classify Italian holders of the surname as descendants of Maltese immigrants, rather than vice versa.
In 1796, the "Feudal Tribute" is "a bouquet of flowers on the feast of St. Martin, Pope (13 November) every year".
Other notable bearers of this name include Charles A. Gauci, fellow of the Malta Heraldic Society and archivist to the Imperial Paleologue family.