| Subject | English | Maltese |
| comp., MS | addition operator | sinjal ta' l-għadd (The + character, used to indicate addition or a positive number) |
| transp., avia. | air operator | linja tal-ajru |
| transp., avia. | air operator | kumpanija tal-ajru |
| transp., avia. | air operator | trasportatur tal-ajru |
| transp., avia. | air transport operator | linja tal-ajru |
| transp., avia. | air transport operator | kumpanija tal-ajru |
| transp., avia. | air transport operator | trasportatur tal-ajru |
| transp., avia., environ. | aircraft operator holding account | kont ta' depożitu ta' operatur tal-inġenji tal-ajru |
| econ., cust. | Authorised Economic Operator | operatur ekonomiku awtorizzat |
| gen. | authorised economic operator for customs simplifications | operatur ekonomiku awtorizzat għas-simplifikazzjoni doganali |
| gen. | authorised economic operator for security and safety | operatur ekonomiku awtorizzat għas-sikurezza u s-sigurtà |
| empl., transp., energ.ind. | combined operator | operatur kumbinat |
| transp., avia. | commercial air transport operator | operaturi tat-trasport kummerċjali bl-ajru |
| comp., MS | comparison operator | operatur għat-tqabbil (A character or symbol that indicates a relationship between two or more values or expressions - for example, < (less than), > (greater than), and = (equal to)) |
| IT, empl. | computer operator | speċjalista tal-informatika |
| tech., law, el. | connecting closed distribution system operator | konnessjoni ta' operatur tas-sistema ta' distribuzzjoni magħluqa |
| gen. | connecting closed distribution system operator | CDSO ta' konnessjoni |
| tech., law, el. | connecting distribution system operator | konnessjoni ta' operatur tas-sistema ta' distribuzzjoni |
| gen. | connecting distribution system operator | DSO ta' konnessjoni |
| tech., law, el. | connection transmission system operator | operatur tas-sistema ta' trażmissjoni tal-konnessjoni |
| gov., IT, empl. | console operator | operatur tal-konsol |
| gen. | customs simplification authorised economic operator | operatur ekonomiku awtorizzat għas-simplifikazzjoni doganali |
| el. | distribution system operator | operatur tas-sistema ta' distribuzzjoni |
| commun., econ. | dominant operator | operatur dominanti |
| econ., commer. | economic operator | attur ekonomiku |
| econ., commer. | economic operator | operatur ekonomiku |
| energ.ind., el. | electricity transmission system operator | operatur tas-sistema ta' trażmissjoni |
| energ.ind. | European Network of Transmission System Operators | netwerk Ewropew tal-operaturi tas-sistemi tat-trażmissjoni |
| el. | European Network of Transmission System Operators for Electricity | Netwerk Ewropew għall-Operaturi tas-Sistema ta' Trażmissjoni tal-Elettriku |
| commun. | European Telecommunications Network Operators' Association | Assoċjazzjoni Ewropea tal-Operaturi tan-Netwerks tat-Telekomunikazzjoni |
| food.ind. | feed business operator | operatur ta' negozju tal-għalf |
| energ.ind. | gas transmission system operator | operatur tas-sistema ta' trażmissjoni |
| tech., law, el. | gate closure time of transmission system operator energy bid submission | ħin tal-għeluq tan-negozju għas-sottomissjoni tal-offerta tal-enerġija tal-operatur tas-sistema ta' trażmissjoni |
| commun., econ. | incumbent operator | operatur preeżistenti |
| energ.ind. | independent system operator | operatur indipendenti tat- trażmissjoni |
| energ.ind. | independent system operator | operatur indipendenti tas- sistema |
| tech., law, el. | market coupling operator | funzjoni ta' operatur tas-suq tal-akkoppjament |
| tech., law, el. | market coupling operator function | funzjoni ta' operatur tas-suq tal-akkoppjament |
| fin. | market operator | parteċipant fis-suq |
| fin. | market operator | operatur tas-suq |
| fin. | market operator | operatur fis-suq |
| comp., MS | mobile operator | operatur mobbli (A company that provides telephone and other communications services to consumers) |
| commun., transp., avia. | Mode S operator | operatur Mode S |
| tech., law, el. | nominated electricity market operator | operatur nominat tas-suq tal-elettriku |
| commer. | non-traditional operator | operaturi mhux tradizzjonali |
| commer. | notified operator | operaturi notifikati |
| empl., transp., mil., grnd.forc. | occupation of road haulage operator | operatur ta' trasport tal-merkanzija bit-triq |
| agric. | official register of professional operators | reġistru |
| ecol. | operator holding account | kont ta' depożitu tal-operatur |
| tech. | operator's position | stazzjon tax-xogħol |
| commun., commer. | operator with significant market power | operatur SMP |
| gen. | principal economic operator | operatur ekonomiku prinċipali |
| agric. | professional operator | operatur professjonist |
| gen. | radio operator | operatur tar-radju |
| commun., econ. | reasonably efficient operator test | test tal-kompetitur raġonevolment effiċjenti |
| proced.law., fin. | receiving system operator | operatur ta' sistema riċevitur |
| chem. | recovery operator | operatur tal-irkupru |
| chem. | recovery operator | stabbiliment li jkun qiegħed jagħmel irkupru |
| chem. | recovery operator | manifattur ta' sustanza rkuprata |
| energ.ind. | regional transmission operator | operatur reġjonali tat-trażmissjoni |
| energ.ind. | regional transmission operator | operatur reġjonali tas- sistema |
| agric. | register of professional operators | reġistru |
| gen. | security and safety authorised economic operator | operatur ekonomiku awtorizzat għas-sikurezza u s-sigurtà |
| law | self-regulation by operators | awtoregolamentazzjoni |
| energ.ind. | storage system operator | operatur tas-sistema tal-ħżin |
| proced.law., fin. | system operator | operatur tas-sistema |
| transp., nautic. | terminal operator | operatur tat-terminal |
| hobby | tour operator | operatur turistiku |
| energ.ind., el. | transmission system operator | operatur tas-sistema ta' trażmissjoni |
| transp. | transport operator | operatur ta' trasport |
| transp. | transport operator | trasportatur |
| energ.ind., polit. | World Association of Nuclear Operators | Assoċjazzjoni Dinjija ta' Operaturi Nukleari |