ÿ is a

Latin script The Latin script, also known as Roman script, is an alphabetic writing system based on the letters of the classical Latin alphabet, derived from a form of the Greek alphabet which was in use in the ancient Greek city of Cumae, in southern I ...

character composed of the letter Y and the diaeresis diacritical mark. It occurs in French as a variant of in a few proper nouns, as in the name of the

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ...

ian suburb of

L'Haÿ-les-Roses L'Haÿ-les-Roses () is a Communes of France, commune in the southern suburbs of Paris, France. It is located from the Kilometre Zero, centre of Paris. L'Haÿ-les-Roses is a ''Subprefectures in France, sous-préfecture'' of the Val-de-Marne ''Dépa ...

and in the surname of the

house of Croÿ The House of Croÿ () is a family of European mediatized nobility, which held a seat in the Imperial Diet from 1486, and was elevated to the rank of Princes of the Holy Roman Empire in 1594. In 1533 they became Dukes of Arschot (in Belgium) and ...

. It occurs in a few Hungarian names as well, such as

Lajos Méhelÿ Lajos Méhelÿ (August 24, 1862 – February 4, 1953) was a Hungarian zoologist, herpetologist, professor, and prolific author. He is one of the greatest, but also one of the most controversial, personalities in the history of Hungarian zoology ...

and

Margit Danÿ Margit Danÿ (5 February 1906 – 22 January 1975) was a Hungarian fencer. She competed in the women's individual foil at the 1928 and 1932 Summer Olympics The 1932 Summer Olympics (officially the Games of the X Olympiad and also known ...

. As rarely appears as the first letter in a name, and all-caps text typically omitted all accents, initially there was assumed to be no need for an uppercase when computer character sets such as CP437 and ISO 8859-1 were designed. However much software assumes that conversion from lower-case to upper-case and then back again is lossless, so was added to many character sets such as

CP1252 Windows-1252 or CP-1252 (code page 1252) is a single-byte character encoding of the Latin alphabet, used by default in the legacy components of Microsoft Windows for English and many European languages including Spanish, French, and German. It i ...

ISO 8859-15 ISO/IEC 8859-15:1999, ''Information technology — 8-bit single-byte coded graphic character sets — Part 15: Latin alphabet No. 9'', is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 1999. ...

, and

Unicode Unicode, formally The Unicode Standard,The formal version reference is is an information technology standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems. The standard, wh ...

(in which every pre-composed Latin character has both an upper- and lower-case version). This also happened to a more prominent character, the German ß.

IPA IPA commonly refers to: * India pale ale, a style of beer * International Phonetic Alphabet, a system of phonetic notation * Isopropyl alcohol, a chemical compound IPA may also refer to: Organizations International * Insolvency Practitioners ...

uses �as one of the Closed central compressed vowels, a type of vowel sound used in some spoken languages. The character has also found use as a

metal umlaut A metal umlaut is a diacritic that is sometimes used gratuitously or decoratively over letters in the names of mainly hard rock or heavy metal bands—for example, those of Blue Öyster Cult, Queensrÿche, Motörhead, the Accüsed, Mötley Crüe ...

In Unicode

* * Letters with diaeresis Latin letters with diacritics Phonetic transcription symbols {{latin-script-stub