| Subject | English | Icelandic |
| math. | acceptance number | staðfestingu númer |
| comp., MS | access number | aðgangsnúmer (A phone number that subscribers can dial to reach online services) |
| math. | admissible numbers | tæk númer |
| math. | average sample number curve | meðaltal sýnishorn númer bugða |
| math. | average sample number function | ASN virka |
| math. | average sample number function | meðaltal úrtaks fjölda virka |
| comp., MS | bank transit number | flutningsnúmer banka (A unique bank registration number that a bank uses to identify itself) |
| math. | Bernoulli numbers | Bernoulli tölur |
| comp., MS | complex number | tvinntala (A number in the form a + bi, where a and b are real numbers and i = sqrt(-1) , so that bi is imaginary unless b = 0) |
| math. | composite index number | samsett vísitala |
| math. | crossed weight index number | yfir-þyngd röðunarnúmer |
| math. | crossed weight index number | merkið þyngd röðunarnúmer |
| math. | cross-weight index number | merkið þyngd röðunarnúmer |
| math. | cross-weight index number | yfir-þyngd röðunarnúmer |
| math. | disproportionate subclass numbers | óhófleg tölur greinar |
| comp., MS | employer identification number | kennitala vinnuveitanda (In the United States, a 9-digit number that identifies a business entity to the government. A business must have an EIN if it has employees or meets other criteria specified by the federal government) |
| comp., MS | European Article Number | Evrópuvörunúmer (A 13-digit international barcode standard maintained by GS1) |
| comp., MS | federal tax identification number | kennitala vegna skatta (In the United States, a 9-digit number that identifies a business entity to the government. A business must have an EIN if it has employees or meets other criteria specified by the federal government) |
| comp., MS | fully qualified account number | fullnægjandi lykilnúmer (A ledger account number in which all segments of an account structure are entered and validated) |
| comp., MS | global trade identification number | alþjóðlegt vörukenni (A 14-digit data structure used to uniquely identify trade items, products, and services at a unit level) |
| comp., MS | ID number | kenni (An ID that consists of one or more numbers) |
| math. | ideal index number | hugsjón röðunarnúmer |
| comp., MS | in-country number format | snið innlendra númera (The string that is used to define how to create an in-country/region number to use when making calls from a dial plan) |
| comp., MS | in-country/region number format | snið númera innan lands/svæðis (The string that is used to define how to create an in-country/region number to use when making calls from a dial plan) |
| math. | index number | vísitölu |
| math. | index number | röðunarnúmer |
| math. | indifference-level index number | val-akur röðunarnúmer |
| math. | indifference-level index number | Konyus röðunarnúmer |
| math. | indifference-level index number | afskiptaleysi-stigi röðunarnúmer |
| comp., MS | International Bank Account Number | Alþjóðlegt bankareikningsnúmer (An account number scheme that is recognized by banks internationally to facilitate credit transfers across national/regional borders) |
| comp., MS | international number format | snið erlendra númera (The string that is used to define how to dial someone from outside of their country/region) |
| comp., MS | item number | vörunúmer (A number that identifies one type of inventory item) |
| math. | Konyus index number | val-akur röðunarnúmer |
| math. | Konyus index number | afskiptaleysi-stigi röðunarnúmer |
| math. | Konyus index number | Konyus röðunarnúmer |
| math. | law of large numbers | lögum um fjölda |
| math. | law of small numbers | lögum sem lítil númer |
| comp., MS | lot number | lotunúmer (A unique identifier that is assigned by the manufacturer for a quantity of material produced as a single lot) |
| comp., MS | mobile phone number | farsímanúmer (The phone number for a mobile phone) |
| comp., MS | ordinal number | raðtala (A number whose form indicates position in an ordered sequence of items, such as first, third, or twentieth) |
| comp., MS | partially qualified account number | ófullnægjandi lykilnúmer (A ledger account number in which all segments of an account structure are not entered) |
| comp., MS | Permanent Account Number | varanlegt reikningsnúmer (A 10-character alphanumeric identifier issued by the Indian Income Tax Department to all taxable entities for taxation and identification purposes) |
| comp., MS | personal identification number | PIN-númer (A unique and secret identification code similar to a password that is assigned to an authorized user and used to gain access to personal information or assets via an electronic device) |
| comp., MS | pilot number | frumnúmer (A telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers) |
| comp., MS | port number | tengisnúmer (A number that identifies a certain Internet application. For example, the default port number for the WWW service is 80) |
| math. | preference-field index number | Konyus röðunarnúmer |
| math. | preference-field index number | val-akur röðunarnúmer |
| math. | preference-field index number | afskiptaleysi-stigi röðunarnúmer |
| math. | proportional subclass numbers | hlutfallsleg tölur greinar |
| math. | pseudo-random numbers | gervislembitala |
| math. | random number generator | slembiteljarann |
| math. | random numbers | slembitölur |
| math. | random numbers | slembisýnatöku númer |
| math. | random numbers | handahófi tölustafir |
| math. | random sampling numbers | handahófi tölustafir |
| math. | random sampling numbers | slembitölur |
| math. | random sampling numbers | slembisýnatöku númer |
| math. | rectified index number | leiðrétta vísitölu númer |
| math. | rejection number | höfnun númer |
| comp., MS | return materials authorization number | númer vöruskilaheimildar (A reference number that is used to authorize and track goods returned for repair or refund. A return materials authorization is issued by a sales entity that authorizes a buying company to return goods) |
| comp., MS | RMA number | RMA-númer (A reference number that is used to authorize and track goods returned for repair or refund. A return materials authorization is issued by a sales entity that authorizes a buying company to return goods) |
| comp., MS | routing number | leiðarnúmer (A unique bank registration number that a bank uses to identify itself) |
| comp., MS | serial number | raðnúmer (A number assigned to a specific inventory item to identify it and differentiate it from similar items with the same item number) |
| comp., MS | social security number | kennitala (In the United States, a Taxpayer Identification Number assigned to citizens and some noncitizens. The number is required for anyone to obtain work or to receive governmental benefits, such as social security payments after retirement) |
| math. | strong law of large numbers | sterka meðaltalslögmálið |
| comp., MS | subscriber access number | aðgangsnúmer áskrifanda (A number that is configured in a Private Branch eXchange (PBX) that allows a subscriber to access their Microsoft Exchange mailbox over the telephone) |
| comp., MS | tax exempt number | skattundanþágunúmer (An identification number that is issued by a tax authority to indicate that a company is not required to pay sales tax) |
| comp., MS | taxpayer identification number | kennitala skattgreiðanda (A 9-digit number used to identify an entity (company or person) for tax reporting purposes in the U.S. There are several different types of tax identification numbers, such as employer identification number (EIN), Social Security number (SSN), individual taxpayer identification number (ITIN), and adopted taxpayer identification number (ATIN)) |
| math. | tolerance number of defects | umburðarlyndi fjölda galla |
| comp., MS | voucher number | fylgiskjalsnúmer (A unique identifier for a transaction or group of transactions) |
| comp., MS | week number | vikunúmer (The weeks of the year are assigned a number from 1 to 52, called week numbers. When you turn on week numbers, they appear on the left side of the Date Navigator in Calendar) |
| math. | weighted index number | vísitala númer |