| Subject | English | Spanish |
| gen. | agreement on the prevention, control and curbing of drug abuse and the unlawful trade in and production of narcotics, psychotropic drugs and related chemical substances | Convenio sobre prevención, control y represión del abuso y del tráfico y de la producción ilícitos de estupefacientes, sustancias psicotrópicas y aditivos químicos |
| law, immigr. | assisting unlawful immigration | ayuda a la inmigración ilegal |
| law, immigr. | assisting unlawful immigration | promoción de la inmigración clandestina |
| crim.law., immigr. | assisting unlawful immigration | ayuda a la entrada y residencia en situación ilegal |
| law, immigr. | assisting unlawful immigration | favorecimiento de la inmigración clandestina |
| law, immigr. | assisting unlawful immigration | facilitamiento de la inmigración clandestina |
| crim.law., immigr. | assisting unlawful immigration | ayuda a la entrada, a la circulación y a la estancia irregulares |
| law, immigr. | assisting unlawful immigration | ayuda a la entrada y a la estancia irregulares |
| transp., avia. | Committee on Unlawful Interference | Comité sobre Interferencia Ilícita |
| transp., avia. | Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation | Convenio para la represión de actos ilícitos contra la seguridad de la aviación civil |
| transp., nautic. | Convention for the Suppression of Unlawful Acts against the Safety of Maritime Navigation | Convenio para la represión de actos ilícitos contra la seguridad de la navegación marítima |
| transp. | Convention for the Suppression of Unlawful Acts Against the Safety of Maritime Navigation | Convenio para la represión de actos ilícitos contra la seguridad de la navegación marítima |
| transp., avia. | Convention for the Suppression of Unlawful Seizure of Aircraft | Convenio para la represión del apoderamiento ilícito de aeronaves |
| law, transp., avia. | Convention for the Suppression of Unlawful Seizure of Aircraft,The Hague,1970 | Convenio para la represión del apoderamiento ilícito de aeronaves |
| UN | Paris Commitments to protect children from unlawful recruitment or use by armed forces or armed groups | Compromisos de París para proteger a los niños y niñas reclutados o utilizados ilícitamente por fuerzas armadas o grupos armados |
| gen. | Paris Commitments to protect children from unlawful recruitment or use by armed forces or armed groups | Compromisos de París |
| gen. | Protocol for the Suppression of Unlawful Acts against the Safety of Fixed Platforms Located on the Continental Shelf | Protocolo para la represión de actos ilícitos contra la seguridad de las plataformas fijas emplazadas en la plataforma continental |
| industr. | Protocol for the Suppression of Unlawful Acts Against the Safety of Fixed Platforms on the Continental Shelf | Protocolo para la represión de actos ilícitos contra la seguridad de las plataformas fijas emplazadas en la plataforma continental |
| transp., avia. | Protocol for the Suppression of Unlawful Acts of Violence at Airports Serving International Civil Aviation | Protocolo para la represión de actos ilícitos de violencia en los aeropuertos que presten servicio a la aviación civil internacional |
| transp., avia. | Protocol for the Suppression of Unlawful Acts of Violence at Airports Serving International Civil Aviation, supplementary to the Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation | Protocolo para la represión de actos ilícitos de violencia en los aeropuertos que presten servicio a la aviación civil internacional |
| transp., avia. | Special Subcommittee on the Development of an Instrument for the Suppression of Unlawful Acts of Violence at Airports serving International Civil Aviation | Subcomité especial encargado de la elaboración de un instrumento para la represión de actos ilícitos de violencia en los aeropuertos que prestan servicio a la aviación civil internacional |
| law, crim.law. | unlawful act | acto ilegal |
| econ. | unlawful agreement | entente ilícita |
| patents. | unlawful application of a trademark | aplicación ilicita de una marca de fábrica |
| law | unlawful assembly | asamblea ilegal |
| int. law. | unlawful combatant | combatiente ilegal |
| law, market. | unlawful competition | competencia ilícita |
| law | unlawful conduct | conducta infractora |
| law | unlawful detainer | detención ilegal |
| law | unlawful detainer | juicio de desahucio |
| law | unlawful detainer illegally holding a person in custody | detención ilegal |
| immigr. | unlawful detention | detención ilegal |
| chem. | unlawful diversion of chemical products | sustracción ilegal de productos químicos |
| gen. | unlawful drug trafficking | tráfico ilícito de estupefacientes |
| UN | unlawful dumping | vertimiento ilegal de basura |
| UN | unlawful dumping | depósito ilegal de desechos |
| law | unlawful harassment | acoso ilicito |
| law | unlawful harassment | acoso ilícito |
| law, transp., avia. | unlawful interference | acto de interferencia ilícita |
| fin. | unlawful introduction | introducción irregular |
| patents. | unlawful marking | designación ilegal |
| patents. | unlawful ***p32 | ilegítimamente |
| patents. | unlawful ***p32 | ilegitimo |
| law | unlawful penetration | penetración ilegal |
| law, health. | unlawful possession of drugs | tenencia ilegal de estupefacientes |
| med. | unlawful possession of drugs | posesion ilegal de drogas |
| immigr. | unlawful presence | presencia ilegal |
| law, social.sc. | unlawful proselytism | proselitismo ilícito |
| fin. | unlawful removal of goods from customs supervision | sustracción de una mercancía a la vigilancia aduanera |
| law, immigr. | unlawful residence | residencia ilegal |
| law, immigr. | unlawful residence | estancia irregular |
| law, immigr. | unlawful residence | permanencia irregular |
| law, immigr. | unlawful residence | permanencia ilegal |
| law, immigr. | unlawful residence | residencia irregular |
| law, immigr. | unlawful residence | situación de irregularidad |
| law, immigr. | unlawful residence | situación irregular |
| law, immigr. | unlawful residence | estancia ilegal |
| law | unlawful restraint | restricción ilegal |
| law | unlawful restraint | encierro ilegal |
| law | unlawful restraint | constreñimiento ilegal |
| transp., avia. | Unlawful Seizure Convention | Convenio para la represión del apoderamiento ilícito de aeronaves |
| transp., avia. | unlawful seizure of aeroplanes | secuestro de aviones |
| law | unlawful seizure of aircraft | secuestro de aeronaves |
| law, transp. | unlawful seizure of ships | secuestro de buques |
| law | unlawful trade mark | marca ilícita |
| patents. | unlawful usurpation of a solution disclosed in others' drawings | toma ilícita de una solución de los dibujos de otros |
| law | unlawful violence | agresión ilegítima |
