In alphabetic order:
- Lex Acilia de Intercalando (191 BC) - adjustment of the calendar
- Lex Acilia Repetundarum (123 BC) - by tribune Glabrio M' Acilius, reformed the courts for the recovery of extorted property (quaestio de repetundis) allowing equites as jurors.
- Lex Acilia et Calpurnia (67 BC) - permanent exclusion from office in cases of electoral corruption.
- Lex Aebutia de Magistratibus Extraordinariis (c. 150 BC) - the proposer of an extra-ordinary magistracy (such as Dictator) cannot be the one to hold the office.
- Lex Aebutia de Formulis (c. 2nd century BC) - Abolished the legis actiones litigation system in favor formulary procedure.
- Leges Aelia et Fufia (about 150 BC) - Confirmed right of any curule magistrate or tribune to disband all assemblies of the people on simple declaration that he had witnessed an unfavorable omen, repealed by the leges clodiae in 58 BC.
- Lex Aelia Sentia (4 AD) - consular law applied by Augustus against the emancipation of slaves among their masters. Freed slaves who had committed certain offenses could quickly have their liberty taken away.
- Lex Antonia de Permutatione Provinciae (44 BC) - Marcus Antonius set this law which gave him a five year's command in Cisalpine and Transalpine Gaul in lieu of Macedon. Also gave authorization to transfer Caesar's legions from Macedon to the new provinces.
- Lex Antonia de Termessibus - alliance with Termessus
- Leges Antoniae - measures of Marcus Antonius against the dictatorship etc.
- Lex Appuleia Agraria et Frumentaria (100 BC) - laws of tribune L. Appuleius Saturninus provided for land distribution to the veterans of C. Marius nd a grain dole to the people. Demagoguery of Saturninus resulted in his death and the annulment of this law.
- Lex Aternia et Tarpeia de Multis (454 BC) - allowed curule magistrates to fine citizens who resisted their authority.
- Lex Atinia (131 or 102 BC) - Tribunes of the plebs automatically promoted to the Senate following their term.
- Lex Aufeia (124 BC) - related to the settlement of Asia Minor.
- Lex Aurelia Iudiciaria (70 BC) - arranged an equitable distribution of jury service among senators, equites, and tribunes.
- Lex Baebia de Praetoribus (c. 192 BC) - set the number of praetors elected at 4 and 6 in alternating years (largely ignored).
- Lex Caecilia et Didia - (98 BC) - forbade the combination of proposed measures in one omnibus bill and enacted that a regular interval of 3 market-days must elapse between the proposal of a bill and its voting in the assembly.
- Lex Calpurnia de Repetundis (149 BC) -by tribune L. Calpurnius Piso, established a permanent court to monitor provincial governors.
- Lex Canuleia de Conubio Patrum et Plebis (445 BC).- by C. Canuleius, reversed Twelve Table's decision of no intermarriage between patricians and plebeians.
- Lex Cassia Tabellaria (137 BC) - Introduces secret ballot in court jury decisions (except for cases of treason).
- Lex Claudia de Senatoribus (218 BC) - by tribune Q. Claudius, supported by senator C. Flaminius, prohibited senators from possessing ships of sea-going capacity and to have unbiased commerce laws. Disregarded by first century B.C.
- Leges Corneliae (81 BC) - Laws of the dictator L. Cornelius Sulla, intended to strengthen the senate and eliminate demagoguery legislation.
- Lex Curiata de Imperio - law passed in the Comitia Curiata used to ratify the choice of a new king, also (as de Adoptione) confirmed Octavian's adoption as Caesar's son in 43 BC.
- Lex Domitia de Sacerdotiis (104 BC) - Established election of priests by the comitia plebis (people's assembly), which was originally chosen by the college of Augurs.
- Lex Frumentaria - A generic term meaning a law regulating price of grain.
- Lex Fufia Caninia (2 BC) - consular law imposed by Augustus, limited the number of slaves that an owner could free in his will.
- Lex Gabinia (67 BC) - by tribune A. Gabinius, gave Pompey overriding command in the Mediterranean Sea against pirate activity.
- Lex Gellia et Cornelia (72 BC) - consuls of this year authorized Legates to confer Roman citizenship. Pompey's clientela and residents of Hispania were the primary beneficiaries at the time of passage.
- Leges Genuciae (342 BC) - by plebeian consul L. Genucius, prohibited loans which carry interest, declared that the same magisterial office should not be held twice within ten years nor could one man hold two offices at once. Also allowed that both consuls could be plebeians. All except the last provision fell into disuse.
- Lex Hadriana - Hadrian's law that enabled permanent tenants to develop land, it was an extension of the Lex Marciana.
- Lex Hortensia (287 BC) -by plebeian dictator Q. Hortensius, said that resolutions of the Concilium Plebis (plebiscita) should have the force of law and bind the whole community, important measure for the voice of the plebs.
- Lex Icilia (456 BC) - law carried by tribune L. Icilius, provided public land on the Aventine for plebeian dwellings.
- Lex Iulia (90 BC) - brought by consul L. Caesar, offered citizenship to all Italians who had not raised arms against Rome in the Italian War (Social War).
- Lex Iulia de Adulteriis Coercendis (18 BC) - part of Augustus' marriage-code, made conjugal unfaithfulness a public as well as a private offense with banishment a possible penalty.
- Lex Iulia de Maritandis Ordinibus (18 BC) - part of Augustus' marriage-code, marrying age celibates and young widows that won't marry were debarred from receiving inheritances and from attending public games. Similar penalties on the married but childless, and Senators couldn't marry freedwomen. It was so unpopular that in AD 9 consuls M. Papius and Q. Poppaeus tried to modify and complete it (Lex Papia Poppaea). Domitian tried to enforce this law forgotton law a century later.
- Lex Iulia Municipalis (45 BC) - preserved in inscription from Heraclea in southern Italy. Drafted by Caesar, published by Antonius, set regulations for the Italian municipalities.
- Lex Iunia (126 BC) - by tribune M. Iunius Pennus, expelled those who were not citizens from Rome, preventing a possible citizenship bill to Italians by Fulvius Flaccus.
- Lex Iunia Norbana (17 BC or 19 AD) - Augustus put check upon emancipation of slaves without fulfillment of proper formalities.
- Lex Licinia et Pompeia (or Pompeia et Licinia) (55 BC) - Consuls Pompey and Crassus prolonged Caesar's proconsulship in the Gauls for another 5 years.
- Lex Licinia Sextia (367 BC) - by the tribunes C. Licinius Stolo and L. Sextius, set an upper limit of 500 iugera (300 acres) as the amount of public land which one person might occupy (limiting the power of the Patricii). Additionally, this law may have provided for one consul being a Plebeian, but the evidence is conflicting. Consuls with names of Plebeian origin had served before, and the Lex Genucia which has similar verbiage was passed only 25 years later.
- Lex Maenia (after 293 BC) - forced the senate or patrician assembly to grant imperium to plebeian magistrates elected by the people's assembly.
- Lex Maenia et Sestia (452 BC) - fixed the scale for fines.
- Lex Manilia de Imperio Cn. Pompeius (66 BC) - by C. Manilius, gave Pompey overall command in the east to fight Mithridates VI and Tigranes.
- Lex Marciana (around Flavian dynasty) - dealt with imperial and private cases in North Africa, regulated relations between cultivators and the proprietors.
- Lex Ogulnia (c. 300 BC) - Opened the priesthoods to plebeians.
- Lex Oppia (215 BC) - first of a series of sumptuary laws on women, strict but repealed after the Second Punic War ended.
- Lex Ovinia (c. 312 BC) - law that gave censors, instead of consuls, the right to revise the member list of the Senate.
- Lex Papia Poppaea (9 AD) - by consuls M. Papius and Q. Poppaeus, revisions of the lex Iulia de Maritandis Ordinibus.
- Lex Papiria et Iulia (or Iulia et Papria) (430 BC) - made payment of fines in bronze mandatory.
- Lex Plautia Iudiciaria (89 BC) - chose jurors from other classes, not just the Equites.
- Lex Plautia et Papiria (89 BC) - by tribunes M. Plautius and C. Papirius, gave full citizenship to every unenfranchised freedman in Italian cities.
- Lex Plautia de Reditu Lepidanorum (70 BC) - granted a pardon to exiled associates of M. Aemilius Lepidus.
- Lex Poetelia (326 BC) - required a judgement by a court authorize enslavement before execution was carried out and alleviated much debt bondage.
- Lex Pompeia de Civitate (89 BC) - by consul Cn. Pompeius Strabo (father of Pompey), made Cisalpine Gaul a Latin rights status province.
- Lex Porcia (Laeca?) (199 BC) - proposed by tribune P. Porcius Laeca to give right of appeal in capital cases.
- Lex Porcia de Tergo Civium (c. 198-184 BC) - By M. Porcius Cato Major, prohibited scourging of citizens without appeal.
- Lex Publilia (339 BC) - by plebeian dictator Publilius Philo, difficult to discern from the Lex Valeria et Horatia of 449 and the Lex Hortensia of 287. Required one appointed censor to be plebeian and negated the veto power of the patrician assembly over legislation enacted in the assembly of the centuries.
- Lex Publilia Voleronis de Tribunis Plebis (471) - Allowed the election of tribunes through the people's assembly rather than the centuriate which severely curtailed patrician influence.
- Lex Roscia (49 BC) - Caesar proposed, gave citizenship to the people of Transalpine Gaul.
- Lex Rubria (c. 45 BC) - a supplement to Caesar's Lex Roscia incorporating Cisalpine Gaul into Italy.
- Lex Sacrata (494 BC) - law after first secession of the plebeians that established the Tribunis Plebis magistracy.
- Lex Sempronia Agraria (133 BC) - distribution of land to the plebes by tribune Tiberius Gracchus. Tiberius avoided Senatorial debate and passed the law through the assembly (a plebiscitum). Ultimately resulted in the murder of Gracchus.
- Lex Servilia Iudicaria (106 BC) - by consul Q. Servilius Caepio, some control of property/extortion courts was handed back to senators from the equites.
- Lex Servilia Glaucia de Repetundis (104 or 101 BC) - by tribune C. Servilius Glaucia, repealed the Lex Servilia Iudicaria.
- Lex Sumptuaria - A generic term for a law that regulated the use of luxury items and public display of wealth.
- Lex Terentia et Cassia (73 BC) - by consuls M. Terentius Varro and C. Cassius Longinus, safeguarded the grain supply of Rome and distributed grain at reduced rates.
- Lex Titia (43 BC) - Gave Octavianus, Marcus Antonius and Lepidus full power for 5 years to defeat the assassins of Caesar; and legalizes the second triumvirate.
- Lex Valeria de Provocatione- it granted every Roman citizen legal right to appeal against a capital sentence, defined and confirmed the right of appeal (provocatio).
- Lex Valeria Cornelia (5 AD) - the two consuls amended the procedure for election of praetors and consuls in Comitia Centuriata. Additional group of ten centuries (centuriae C. et L. Caesaris) were named to honor magistates after death and gave them the preliminary choice of the candidates to stand for election.
- Lex Valeria et Horatia de Plebiscitum (449 BC) - Defined the rights and authority of tribunes following the second plebeian secession.
- Lex Vatinia (59 BC) - by tribune P. Vatinius, gave Julius Caesar governorship of Cisalpine Gaul and of Illyricum for five years.
- Lex Villia Annalis (180 BC) - first law to set minimum ages for curule magistrates, Aediles 36, Praetors 39, Consuls 42 and forced a period of two years between each lesser magistracy.
- Lex Voconia (169 BC) - by tribune Voconius, limited the amount of real estate that could be willed to female heirs, but was mostly evaded due to transfers of land to male trustees acting on the behalf of women.
- Senatus Consultum - A general term meaning a decree made by the majority of the Senate.
- Senatus Consultum de re Publica Defenda - Senate decree for the defence of the Republic. Issued by the senate in cases of extreme peril for the Republic, usually to deal with internal political violence. The first decree was issued in 121 BC due to riots provoked by Gaius Gracchus.
- Twelve Tables (451 BC) - The first set of Roman laws published by the Decemviri which would be the starting point of the elaborate Roman constitution. The twelve tables covered issues of civil, criminal and military law.
Did you know...
Roman law civilized the world, because wherever Rome conquered, they took their legal concepts with them and implanted them so strongly that they are still functioning in many parts of Europe today.