ABRAMI: Patronimic, from the first name Abramo, of Hebrew origin.
ACARDI, ACCARDI, ACCARDO : From the German origine akhard, consisting of aki (wound) or agi (fear) and hart (hard) as a nickname for a strong warrior.
ACCIARI, ACCIARO, ACCIAROLI: From the profession of steel worker or axe maker.
ACCORSI, ACCORSO, ACCURSIO, ACCURSO: From the Latin verb "adcurro" meaning come in defence or help.
ACERBI, ACERBIS, ACERBO: From "acerbus", meaning "cruel" or "too early" (of a premature infant). In the Middle Ages it was common to say "acerba sorte" to mean a cruel destiny.
ACQUA, ACQUARONE, ACQUATI : Connected to a name of place containing the word "acqua" (water) or to the ancient job of water carrier (vaticale).
ACQUAVIVA: Possibly from the name of a place where a water spring was present (ex. Acquaviva Collecroce)
ADAMI, ADAMO, ADAMOLI, ADAMELLI, ADAMOLLI, ADEMOLLO (click here for more information)
ADDARIO: Patronimic, from the name Dario = that who owns goodness
ADDAZIO: Patronimic, from the name Dazio, connected to the cult of San Dazio, an martyr in Africa
AFFERRANTE: Patronimic, from the first name Ferrante
AGNELLO, AGNELLI, AGNELLUTI, AGNELLUTTI: Patronimic, from a first name common in the Middle Ages
AGOSTI, AGOSTINELLI, AGOSTINI, AGOSTINONE: Patronimic, from the imperial attribute "Augustus" = favored by good omens, or possibly also connected to a birth in August
AGUZZI, AGUZZO: From an ancient Roman cognomen, "Acutus"
AIALA, AJALA: Typical Sicilian surname, possibly of Spanish or Arabic origin (ayal= deer)
AIELLO, AJELLO : From the Latin word agellum = small field.
AIOLFI, AIOLFO: Patronimic, from the German name Agilulfo agi (awe) and wolf, meaning someone feared like a wolf.
AIRALDI, AIROLDI, AIROLDO, ARALDI, ARALDO, ARIOLDI, ARIOLDO : Patronimic, from the German name Ariovaldo consisting of haria (army) and waldan (to lead), meaning "that who leads the army".
ALAMANNI: From the nickname "alemannus", of German origin.
ALBANESE, ALBANESI: Originary from Albania. Since the 15th century many colonies of people from Albania moved to Abruzzi, Molise, Apulia, Calabria, Sicily.
ALBANI, ALBANO : Toponimic, from many names of places in Italy (Alba, Albano)
ALBERTAZZI, ALBERTI, ALBERTINI, ALBERTOLLI, ALBERTONI: From the German first name Alberto, deriving from Adalberto = famous for nobility
ALBERANI, ALBERI, ALBERO, ALBERONI, ARBORE, ARBORETO: From the Latin word "arbor" = tree, connected possibly to a job as woodcutter.
ALBERICI, ALBERIGHI, ALBRICI, ALBRISIO, ALBRIZIO: Patronimic, from the Gothic name Alberico, consisting of albhi (elf) and rix (lord) meaning Lord of the elfs.
ALBERTA, ALBERTARIO, ALBERTAZZI, ALBERTI, ALBERTO, ALIBERTI, ALIBERTO: Patronimic, from the German name Adalberto consisting of athala (nobility) and berth (brightness).
ALBINI, ALBINO, ALBINONI: Possibly from the nickname "albinus", person with light skin and white hair.
ALDEBRANDI, ALDOBRANDI, ALDOBRANDO, ALDOVRANDO, ALTEBRANDI, ALTEBRANDO, ALTOBRANDI, ALTOBRANDO : Patronimic, from the German name Aldobrando consisting of alda (wise) or alt (old) and branda (sward).
ALEMAGNA, ALEMANI, ALEMANNI : See Alamanni
ALESSANDRI, ALESSANDRINI, ALESSANDRINO, ALESSANDRO, ALESSANDRONE : From the name Alessandro (Alexander). It became popular because of the Romance (XII century) about Alexander the Great
ALFERO, ALFIERE, ALFIERI, ALLIERI, ALLIERO, AUFERIO: Possible origins: patronimic, from the German Adalferio consisting ofi athala (nobility) and faran (travel); or Arabic from al faris (knight) or al faras (horse).
ALFONSETTI, ALFONSI, ALFONSO, ALFONSONI, ALFONZO: From the first name Alfonso.

ALINARI, ALINERI, ALINEI, ALIERI: Patronimic, from the Frankish Alinarioconsisting of alian (power) and haria (army).
ALLEVI, ALLIEVI, ALLEVA : From a first name used in the Middle Ages and early Christian period as "Diotallevi" menaing "may God raise you" given in good omen, sometimes to orphaned children.
AIUTO, AIUTI: From a first name used in the Middle Ages and early Christian period as "Diotaiuti" menaing "may God help you" given in good omen, sometimes to orphaned children.
ALIPERTI, ALIVERTI: From the German first name Alberto, deriving from Adalberto = famous for nobility
ALOIA, ALOJA : Patronimic, from the dialect version ov the name Eligio, used in Apulia and Campania.
ALOISA, ALOISE, ALOISI, ALOISIO, ALVISE, ALVISIO : Patronimic, from the ancient German name Lodovico, changed into Aloysius
ALONZI: From the Spanish first name Alonso
ALTAMURA: Toponimic, from the town of Altamura (BAri).
ALVISA, ALVISO, ALVISI: From the first name Aloisio (Luigi) from the ancient French name "Loois" o "Luois" deriving from the German first name Lodovico
AMADEI, AMADEO, AMEDALI, AMEDEI, AMODEO, AMADINI, AMODIO, AMADUCCI: Patronimic, from the Latin name Amadeus, that who loves God
AMANTEA, AMANTIA: From the locality of Amantea, region of Basilicata
AMANZA: From the Latin first name "Mantius" or from the Calabrese dialect word "manzu" meaning "mansueto" "tame"
AMATA, AMATO, AMATUCCI, AMATULLI: From the Latin Amatus = loved by God
AMBROGETTI, AMBROGI, AMBROGIO, AMBROSETTI, AMBROSIN, AMBROSIO: From the first name Ambrogio, with its many variants has spread throughout the peninsula due to the cult of St. Ambrose in Milan. Derived from the Latin personal name Ambrosius, which in its turn derives from the Greek word Ambròsios = immortal.