Hash, hashes, hash mark, or hashing may refer to:

Substances Hash (food), a coarse mixture of ingredients, often based on minced meat Hash (stew), a pork and onion-based gravy found in South Carolina Fossil hash, a rock composed primarily of fragmented fossils Hash, a nickname for hashish, a cannabis product

Marks and symbols Number sign (#), also known as the hash, hash mark, or (in American English) pound sign Checkmate symbol in chess Hatch marks, hash marks or tick marks, a form of mathematical notation The individual markings on a graduation (scale) Hash mark (sports), a similar marking on hockey rinks and gridiron football fields Service stripe, a military and paramilitary decoration Tally mark, a counting notation

Computing Hash function, a small, fixed-size pseudorandom index derived in a deterministic way from data; used in hash tables and cryptography Cryptographic hash function, a hash function used to authenticate message integrity Hash chain, a method of producing many single-use keys from a master key or password Geohash, a spatial data structure which subdivides space into buckets of grid shape Hash table, a data structure using hash functions hash (Unix), an operating system command for manipulating a hash table Zobrist hashing, a method of hashing chess positions into a key URI fragment, in computer hypertext, a string of characters that refers to a subordinate resource

Other uses Hash (EP) ([#]), a 2020 EP by Loona

See also

Fossil hash, a rock composed primarily of fragmented fossils Hachis parmentier, a name for shepherd's pie Hash browns Hash House (disambiguation) Hashtag, a form of metadata often used on social networking websites Hatching, graphic procedure and pattern All pages with or