Blackletter z (ℨ𝔷 𝖅𝖟) may refer to:

• tailed z
• Dram (unit)
• Unicode character names:
  • Fraktur in Unicode
  • Mathematical Alphanumeric Symbols

Z, z is a letter in the Polish, Kashubian and  Maltese alphabets.

Ź (minuscule: ) is a letter of the Latin alphabet, formed from Z with the addition of an acute accent. It is used in the Polish and Montenegrin alphabets, and in certain other languages:

• Slavic languages - usually the palatalized form of /z/

• Polish language - (voiced alveolo-palatal fricative)
• Montenegrin language - along with the digraph "zj"
• In the Belarusian Łacinka for зь /zʲ/
• Lower Sorbian language 

• In the Romanization of Pashto, it is used to represent voiced alveolar affricate .
• In Emiliano-Romagnolo alphabet, it is used to represent voiced dental fricative [ð]. Depending on the various dialects, the pronunciation can be [ðz], or, under Italian influence, [dz], but the most common pronunciation is [ð].

Z (named zed ' or zee ) is the 26th and final letter of the modern English alphabet and the ISO basic Latin alphabet.

Compress is a Unix shell compression program based on the LZW compression algorithm. Compared to more modern compression utilities such as gzip and bzip2, compress performs faster and with less memory usage, at the cost of a significantly lower compression ratio.

is a control character in ASCII code. It is commonly used as a substitute (SUB) character. It is perhaps best known as the keyboard shortcut in Windows applications for the undo command. It is also used to signal an end-of-file on some operating systems.

E-Z configuration, or the E-Z convention, is the IUPAC preferred method of describing the absolute stereochemistry of double bonds in organic chemistry. It is an extension of cis/trans notation (which only describes relative stereochemistry) that can be used to describe double bonds having two, three or four substituents.

In non-standard analysis, a hyperinteger N is a hyperreal number equal to its own integer part. A hyperinteger may be either finite or infinite. A finite hyperinteger is an ordinary integer. An example of an infinite hyperinteger is given by the class of the sequence (1,2,3,...) in the ultrapower construction of the hyperreals.

An integer (from the Latin  meaning "whole") is a number that can be written without a fractional component. For example, 21, 4, 0, and -2048 are integers, while 9.75, , and  are not.

Z++ is also a version of the C++ programming language (not to be confused with Z++ that this article is about).

Z++ (pronounced zed plus plus) was an object-oriented extension to the Z specification language.