This is a partial list of Roman laws. A Roman law () is usually named for the sponsoring legislator and designated by the adjectival form of his gens name (nomen gentilicum), in the feminine form because the noun lex (plural leges) is of feminine grammatical gender. When a law is the initiative of the two consuls, it is given the name of both, with the nomen of the senior consul first. Sometimes a law is further specified by a short phrase describing the content of the law, to distinguish that law from others sponsored by members of the same gens.
Roman laws {| class="wikitable sortable" |- ! Name ! data-sort-type=isoDate | Date ! Passed by ! Magistracy held ! Description |- |Lex Regia |759–509 BC | |Kings of Rome |Laws enacted by the Roman kings before the Republic. |- |Lex Valeria |509, 449, & 300 BC |P. Valerius Publicola |Consul |Granted every Roman citizen legal right to appeal against a capital sentence, defined and confirmed the right of appeal (provocatio). |- |Lex Sacrata |494 BC
|law after first secession of the plebeians that either affirmed the sacrosanctity of the tribunes or established the plebeians as a sworn confederacy against patricians. |- |Lex Publilia |471 BC |Volero Publilius |Tribune of the plebs |Transferred the election of the tribunes of the plebs to the comitia tributa. |- |Lex Icilia de Aventino publicando |456 BC |L. Icilius |Tribune of the plebs |Gave land to plebeians. |- |Lex Aternia Tarpeia |454 BC |A. Aternius Varus & S. Tarpeius Montanus Capitolinus |Consuls |Allowed magistrates to fine citizens, but set maximum fines. |- |Lex Menenia Sestia |452 BC |T. Menenius Lanatus & P. Sestius Capitolinus Vaticanus |Consuls |Scale for fines, 1 ox = 12 sheep = 100 lb. of bronze. |- |Lex Valeria Horatia |449 BC |L. Valerius Potitus & M. Horatius Barbatus |Consuls |Three laws: (1) Lex Valeria Horatia de plebiscitis: established that the resolutions passed by the Plebeian Council were binding on all. (2) Lex Valeria Horatia de provocatione: granted the right to appeal to the People of any decision of magistrates. (3) Lex Valeria Horatia de tribunicia potestate: restored the potestas tribunicia, the powers of the plebeian tribunes. |- |Lex Trebonia |448 BC |L. Trebonius |Tribune of the plebs |Forbade the cooptation of additional tribunes of the plebs to fill vacant positions. |- |Lex Canuleia |445 BC |C. Canuleius |Tribune of the plebs |Allowed patricians and plebeians to intermarry. |- |Lex Aemilia de censoribus |434 BC |Mam. Aemilius Mamercinus |Dictator |Reduced the terms of censors to a year and a half. |- |Lex Papiria Julia |430 BC |L. Papirius Crassus & L. Julius Iulus |Consuls |Made payment of fines in bronze mandatory. |- |Lex Licinia Sextia |367 BC |C. Licinius Stolo & L. Sextius Lateranus |Tribunes of the plebs |Four laws: (1) Lex de consule altero ex plebe et de praetore ex patribus creando: resumed the consulship and opened it to plebeians, and created the praetorship, reserved to patricians. (2) Lex de aere alieno: provided that the interest already paid on debts should be deducted from the principal and that the payment of the rest of the principal should be in three equal annual instalments. (3) Lex de modo agrorum: restricted individual ownership of public land in excess of 500 iugeras (300 acres) and forbade the grazing of more than 100 cattle on public land. (4) Lex de Decemviri Sacris Faciundis: created the Decemviri sacris faciundis, a college of ten priests, of whom five had to be plebeians. |- |Lex Genucia |342 BC |L. Genucius |Tribune of the plebs |Three laws: (1) Abolished interest on loans. (2) Required the election of at least one plebeian consul each year. (3) Prohibited a magistrate from holding two magistracies in the same year, or the same magistracy for the next ten years (until 332).Livy, vii. 42.Cornell, Cambridge Ancient History, vol. 7-2, p. 337. Cornell explains that Livy confused the contents of the Lex Licinia Sextia of 366 with the Lex Genucia of 342.Brennan, The Praetorship, pp. 65-67, where he shows that the ten year rule was only temporary at this time. |- | Leges Publiliae |Lex Publilia |339 BC |Q. Publilius Philo |Consul and dictator |Three laws: (1) Reserved one censorship to plebeians. (2) Made plebiscites binding on all citizens (including patricians). (3) Stated that the Senate had to give its prior approval (the Auctoritas patrum) to plebiscites before becoming binding on all citizens (the lex Valeria Horatia of 449 had placed this approval after plebiscites). |- |Lex Poetelia Papiria|326 BC |C. Poetelius Libo & L. Papirius Cursor |Consuls |Abolished the contractual form of Nexum, or debt bondage. |- |Lex Ovinia |312 BC (before) |Ovinius |Tribune of the plebs |Transferred the right to appoint Senators from the consuls to the censors. |- |Lex Atilia Marcia|311 BC |L. Atilius & C. Marcius Rutilus Censorinus |Tribunes of the plebs |Empowered the people to elect sixteen military tribunes for each of four legions. |- |Lex Ogulnia|300 BC |Cn. & Q. Ogulnius |Tribune of the plebs |Created four plebeian pontiffs and five plebeian augurs. |- |Lex Hortensia|287 BC |Q. Hortensius |Dictator |Plebiscites approved by the Assembly of the People gain the status of law. |- |Lex Aquilia de damno|286 BC (possibly) |Aquilius |Tribune of the plebs |Provided compensation to the owners of property injured by someone's fault. |- |Lex Maenia |279 BC |MaeniusBroughton, vol. I, pp. 193, 237. |Tribune of the plebs |Carried the principle of lex Pubilia to elections (approval of Senate moved before the elections, not after).
|314-100 BC
|Prohibited the dumping of waste at a specific locale by Luceria.
|Shortly after 241 BC
|Prohibited the cutting of trees or removal of timber at a nearby sacred grove. It also outlined the punishments for those who violated the law. |- |Lex Hieronica|240 BC |Hiero II |King of Sicily |Taxation of Sicily (the legislation of Hiero II was included in Roman law). |- |Lex Claudia de nave senatoris|218 BC |Q. Claudius |Tribune of the plebs |Prohibited senators from participating in overseas trade, obsolete by the time of Cicero. |- |Lex Minucia |216 BC |M. Minucius |Tribune of the plebs |Appointment of three finance commissioners. |- |Lex Oppia|215 BC |C. Oppius |Tribune of the plebs |Limited female adornment. |- |Lex Cincia de donis et muneribus|204 BC |M. Cincius Alimentus |Tribune of the plebs |Tort reform concerning the payment of lawyers. |- |Lex Porcia|199 BC |P. Porcius Laeca |Tribune of the plebs |Gave right of appeal (provocatio) in capital cases. |- |Lex Porcia de tergo civium|195 BC |Cato the Elder |Consul |Extended the right to provocatio against flogging. |- |Lex Acilia de intercalando |191 BC |M'. Acilius Glabrio |Consul |Adjustment of the calendar, then roughly four months off its Julian equivalent. |- |Lex Porcia |185 BC |L. Porcius Licinus |Consul |Provided for a very severe sanction (possibly death) against magistrates who refused to grant provocatio. |- |Lex Baebia de Praetoribus|181 BC |M. Baebius Tamphilus |Consul |Set number of praetors to alternate, but was never observed. |- |Lex Cornelia et Baebia de Ambitu|181 BC |P. Cornelius Cethegus & M. Baebius Tamphilus |Consuls |Against electoral bribery. |- |Lex Villia Annalis|180 BC |L. Villius Annalis |Tribune of the plebs |Established minimum ages for the cursus honorum offices; determined an interval of two years between offices. |- |Lex Claudia de sociis|177 BC |C. Claudius Pulcher |Consul |Limited immigration of Latin allies to Rome. |- |Lex Voconia|169 BC |Q. Voconius Saxa |Tribune of the plebs |Disallowed women from being the main heir to a dead man's estate, including cases where there were no male relatives alive. |- |Lex Papiria de dedicationibus |166—155 BCW. Jeffrey Tatum, "The lex Papiria de Dedicationibus", in Classical Philology, Vol. 88, No. 4. (October 1993), pp. 319–328. The traditional date of 304 BC is incorrect. |Papirius |Tribune of the plebs |Forbade consecration of real property without approval of the popular assembly. |- |Lex Vallia de manus iniectione|160 BC (circa?) |(Gaius) Vallius |Tribune of the plebs |Modification or extension of legis actiones. |- |Lex Aelia et Fufia|150 BC (circa?) |Aelius & FufiusBroughton, vol. I, pp. 452, 453. |Tribunes of the plebs? |Two laws probably regulating auspices. |- |Lex Atinia de tribunis plebis in senatum legendis|149 BCBroughton, vol. I, pp. 458, 459. |Atinius |Tribune of the plebs | Allowed Plebeian Tribunes to be automatically enrolled in the senate upon election. |- |Lex Atinia de usucapione|149 BC |Atinius |Tribune of the plebs |Dealing with ownership. |- |Lex Calpurnia de repetundis|149 BC |L. Calpurnius Piso |Tribune of the plebs |Established a permanent extortion court. |- |Lex Scantinia|149 BC (circa) |M. Scantius or ScantiniusBroughton, vol. I, pp. 459, 460 (note 3). |Tribune of the plebs |Regulating some aspects of homosexual behaviour among citizens, primarily protecting freeborn male minors. |- |Lex provincia|146 BC
|Set of laws designed to regulate and organize the administration of Roman provinces. |- |Lex Gabinia tabellaria|139 BC |A. Gabinius |Tribune of the plebs |Introduced secret votes in election for magistrate offices. |- |Lex Cassia tabellaria|137 BC |L. Cassius Longinus Ravilla |Tribune of the plebs |Introduced secret votes in court jury decisions. |- |Lex Sempronia agraria |133 BC |Ti. Sempronius Gracchus |Tribune of the plebs |Set of laws that redistributed land among the poor; repealed after his assassination. |- |Lex Aufeia|123 BC |Aufeius |Tribune of the plebs |Settlement of Asia. |- |Lex Acilia repetundarum|122 BCBroughton, vol. I, pp. 517, 519 (note 4). |M. Acilius Glabrio (& C. Sempronius Gracchus) |Tribunes of the plebs |Repetundae procedures for jurors in courts overseeing senatorial class to prevent corruption abroad. |- |Lex Rubria |122 BC |C. Rubrius |Tribune of the plebs |Authorised a colony on the ruins of Carthage. |- |Lex Aebutia de formulis|120–63 BC (circa) |AebutiusBroughton, vol. II, p. 468. |Tribune of the plebs (?) |Authorized praetor's discretion to be introduced into the court of the praetor urbanus, praetor able to remodel private law of Rome. |- |Lex Aebutia de magistratibus extraordinariis |120–63 BC (circa) |Aebutius |Tribune of the plebs? |Proposer of extraordinary magistracy cannot hold it. |- |Lex Servilia Caepio |106 BC |Q. Servilius Caepio |Consul |Some control of the court de rebus repentundis was handed back to senators from the equites. |- |Lex Cassia de senatu|104 BC |L. Cassius Longinus |Tribune of the plebs |Required any senator to be expelled from the senate if they had been convicted of a crime, or if their power (imperium) had been revoked while serving as a magistrate. |- |Lex Domitia de sacerdotis|104 BC |Cn. Domitius Ahenobarbus |Tribune of the plebs |Established the election of the pontifex maximus and the members of the college of priests (chosen by cooptation before). |- |Lex Appuleia agraria|103–100 BC |Saturninus |Tribune of the plebs |Made provision for public lands taken in Cisalpine Gaul from the Cimbri to be allocated to poor citizens. |- |Lex Appuleia de maiestate|103–100 BC |Saturninus |Tribune of the plebs |Established an equestrian court to try maiestas.|- |Lex Servilia Glaucia de Repetundis|101 BC |C. Servilius GlauciaBroughton, vol. I, pp. 571, 572. |Tribune of the plebs |Made juries in property court composed by equites only. |- |Lex Caecilia Didia|98 BC |Q. Caecilius Metellus Nepos & T. Didius |Consuls |Required laws to proposed at least three market days before any vote. Also forbade omnibus bills, which are bills with a large amount of unrelated material. |- |Lex Licinia Mucia|95 BC |L. Licinius Crassus & Q. Mucius Scaevola |Consuls |Removed Latin and Italian allies from Rome's citizen-rolls. |- |Lex Iulia de Civitate Latinis et Sociis Danda|90 BC |Lucius Julius Caesar |Consul