There are two types of tribes within Nova Roma: the regular tribes, used for the voting comitia, and the three old ceremonial tribes, used for religious purposes. The first description below is about the voting tribes, and you can learn about the ceremonial tribes in the second section of this article.

Tribes (tribus in Latin both in singular and plural) are the voting blocks of the comitia populi tributa and comitia plebis tributa. Every citizen of Nova Roma is placed into a tribe, determined by taxpayment status. There are a total of 19 tribes. Taxpaying citizens, the assidui, are distributed among the 15 rural tribes have more voting weight, as rural tribes have less citizens in them; therefore, each citizen's individual vote carries a greater weight. Non-paying citizens, the proletarii, are placed in one of the 4 urban tribes where a vote is shared with hundreds of other citizens and thus it has much less weight.

Following Roman traditions and practices, when the tribal assembly of the people of Nova Roma, the comitia populi tributa and comitia plebis tributa are called to vote, each citizen's vote is counted only within one's tribe. The overall result within a single tribe determines the vote of that tribe, and it's the vote of each tribe that is counted when calculating the results of the voting. See Article II.C.3. of the Lex Tullia de comitiis habendis for more information.

The leges that govern the tribal framework were implemented to make the social order of Nova Roma as Roman as possible under our modern circumstances, returning to the best and most classical practices of our ancestors, and regulating the centuries and tribes of the Nova Roman people in a manner that is most practical and most traditional at the same time. See the lex Arria Tullia de classibus et centuriis et de tribubus novis for detailed information. Upon obtaining citizenship or due to a change in tax-paying (assiduus) status, censors allocate citizens to either one of a small number of "urban" tribes or to one of the many "rural" tribes.

Urban tribes: The four urban tribes, are reserved for all non-paying (proletarius or capite census) citizens. These four tribes will contain the masses of inactive or disappeared citizens. They are named:

I. Suburana

II. Palatina

III. Esquilina

IV. Collina

Rural tribes: There are fifteen rural tribes of Nova Roma which are based on the 15 oldest Roman rural tribes. All tax-payer (assiduus) citizens are distributed among them.

V. Romilia

VI. Voltinia

VII. Voturia

VIII. Aemilia

IX. Horatia

X. Lemonia

XI. Papiria

XII. Pupinia

XIII. Menenia

XIV. Cornelia

XV. Camilia

XVI. Fabia

XVII. Pollia

XVIII. Sergia

XIX. Galeria

Tribal officers

Each tribe shall have a varying number of officers, some automatic and others by election.

• Tribunus Aerarius: One or more tribuni aerarii may exist, which is an office automatically given to all citizens within the tribe who bear the rank of tribunus aerarius equestris.

The duty of the tribuni aerarii is to encourage citizens to pay their Nova Roman taxes and potentially to help those who cannot pay by donating to them or finding another donor who would help them. Donating or finding a donor is not a mandatory duty, but only an encouraged activity. The term of the office of a tribunus aerarius depends on the maintenance of their status as tribunus aerarius equestris. The census points given to the tribuni aerarii for the status as tribuni aerarii equestres shall be the reward for their work.

• Curator Tribus: There is one curator tribus who is elected by a vote of the allocated equites and the tribuni aerarii of the tribe, from among the equites and tribuni aerarii equestres of the tribe.

The duty of the curator tribus is to direct, review, encourage, support, and in case of need, to substitute, the work of the tribuni aerarii, and to help the citizens within the tribe who need representation or help getting in touch with the officials of the republic. The term of office of the curatores tribuum is not limited to time, but their work is monitored and reviewed by the three tribuni of the old tribes. The curatores lose their position if they lose their equestrian, treasury tribune equestrian, or their assiduus status. The curatores tribuum are awarded service points under III.A.7.f of the Lex Arria de censu civium aestimando, “officers of recognized corporations”, falling in the “president” category, receiving 6 CP, but they shall not receive Past Service Points for more than one year, and these Past Service Points shall be given only if they no longer hold the office.

The Old Ceremonial Tribes

All Nova Roma citizens will also be allocated to one of three special ceremonial tribes. The censores shall distribute all citizens by gentes into the three original tribes of the Roman people. All members of the same Nova Roman gens shall belong to one tribe.

Within each ceremonial tribus, the censores shall divide the gentes into ten curiae; all members of the same gens within one ceremonial tribe gens shall belong to the same curia. Each curiae shall celebrate the sacra of the curia together and the primary role of all curiae shall be the fostering of community and helping the social practice of the religio Romana and the cultus of the Roman gods. See the Lex Arria de veteribus tribubus et curiis for more information.

• "CURIAE" FORUM OF NOVA ROMA (COMMUNITY OF CEREMONIAL TRIBES): https://discord.gg/KNbcKBqgbt.

The ceremonial tribes are:

I. Ramnes: All citizens with a gentes of Latin origin are allocated to the Ramnes tribe, or those gentes which were established in the first year of Nova Roma.

The tribe contains the following curiae:

I. Foriensis,

II. Veliensis,

III. Velitia,

IV. Palatina,

V. Cermalensis,

VI. Caelia,

VII. Cispia,

VIII. Oppia,

IX. Martia,

X. Volturna.

II. Tities: All citizens with a gentes of Sabine origin are allocated to the Tities tribe, or those gentes which were established until the Completion of the Founding of Nova Roma.

The tribe contains the following curiae:

I. Titia,

II. Faucia,

III. Acculeia,

IV. Hersilia,

V. Quinctia,

VI. Fabia,

VII. Septima,

VIII. Octava,

IX. Nona,

X. Decima.

III. Luceres: All citizens with a gentes of Etruscan origin are allocated to the Luceres tribe, or those gentes of the third decade or later.

The tribe contains the following curiae:

I. Rapta,

II. Tifata,

III. Semuria,

IV. Solonia,

V. Taracia,

VI. Lateria,

VII. Latia,

VIII. Gabina,

IX. Crustumina,

X. Querquetulana.

Ceremonial tribal officers

The officers of these old ceremonial tribes and curiae shall be responsible to motivate, assist and aid the cultic practice of the individual citizens and gentes belonging to them. They shall organize programs and celebrations to engage the citizens within the curia and to celebrate Romanitas, the sacra privata and sacra publica of Nova Roma.

• See the Album of the Ceremonial Tribal Officers for the current tribal officer appointments.

Only a member of the curia can be an officer of the curia, and each officer shall hold only one office, but the Collegium Pontificum may allow for individuals to hold two or all three offices of the curia if there are no candidates for the office. The officers include:

• Curio: The Curio is the head of an individual curia. Curiones are forbidden to hold a magistracy or governorship, because their primary focus within Nova Roma should be nothing else than the promotion of the social and religious community life of the curiales (members of the curia) in their curiae (exemptions can be granted). The curio and the flamen curialis, jointly, may nominate candidates for a lictor curiatus from among the members of the curia to the Collegium Pontificum for appointment whom the Collegium Pontificum shall appoint or refuse based on the evaluation of the candidate. The tenure of this office is not limited to time, but the Collegium Pontificum may remove someone from office if their performance or behavior is deemed unsatisfactory. Service points are awarded under III.A.7.f of the Lex Arria de censu civium aestimando, “officers of recognized corporations”, falling in the “president” category, receiving 6 CP, but they shall not receive Past Service Points for more than one year, and these Past Service Points shall be given only if they no longer hold the office.

• Tribunus: The tribunus is the chief of a whole tribe. They are elected from any of the ten curiones of the tribe. The three tribuni of the old tribes are responsible to monitor and review the work of the curiones within their respective tribes, and, by a majority decision, the tribuni are empowered to remove any individual curio (except the curio maximus) from office if they find his or her work or behavior unsatisfactory. The tenure of this office is not limited to time, but the Collegium Pontificum may remove someone from office if their performance or behavior is deemed unsatisfactory. Service points are awarded under III.A.7.f of the Lex Arria de censu civium aestimando, “officers of recognized corporations”, falling in the “president” category, receiving 6 CP, but they shall not receive Past Service Points for more than one year, and these Past Service Points shall be given only if they no longer hold the office.

• Curio Maximus: The curio maximus is entitled to convene the Comitia Curiata in lieu of the pontifex maximus. The thirty curiones elected a curio maximus from among themselves. The position of the curio maximus can also be filled by one of the three tribuni if so elected by the curiones. The Comitia Curiata shall confirm the election of the curio maximus and the tribuni of the tribes. The curio maximus, shall oversee the work of the curial officers. The tenure of this office is not limited to time, but the Collegium Pontificum may remove someone from office if their performance or behavior is deemed unsatisfactory. Service points are awarded under III.A.7.f of the Lex Arria de censu civium aestimando, “officers of recognized corporations”, falling in the “president” category, receiving 6 CP, but they shall not receive Past Service Points for more than one year, and these Past Service Points shall be given only if they no longer hold the office.

• Flamen Curialis: Each curia shall nominate a candidate for flamen curialis, whom the Collegium Pontificum shall appoint or refuse based on the evaluation of the candidate. The Comitia Curiata shall witness the appointment of a flamen curalis. The priesthood of the flamen curialis is for life, but the Collegium Pontificum may remove any of them if the performance or behavior of any of them is unsatisfactory. The curio and the flamen curialis, jointly, may nominate candidates for a lictor curiatus from among the members of the curia to the Collegium Pontificum for appointment whom the Collegium Pontificum shall appoint or refuse based on the evaluation of the candidate. Service points are awarded under III.B.1 of the Lex Arria de censu civium aestimando, “other sacerdos”, receiving 20 CP.

• Lictor Curiatus: A lictor curiatus is nominated jointly by the curio and the flamen curialis from among the members of the curia to the Collegium Pontificum for appointment whom the Collegium Pontificum shall appoint or refuse based on the evaluation of the candidate. The Collegium Pontificum may select any member of the curia for appointment as lictor curiatus at any time, independently from the nomination by the curio and flamen. The tenure of this office is not limited to time, but the Collegium Pontificum may remove someone from office if their performance or behavior is deemed unsatisfactory. The lictores curiati serve on the Comitia Curiata.