ISO/IEC 8859-14:1998,Information technology — 8-bit single-byte coded graphic character sets — Part 14: Latin alphabet No. 8 (Celtic), is part of theISO/IEC 8859 series of ASCII-based standardcharacter encodings, first edition published in 1998. It is informally referred to asLatin-8 orCeltic. It was designed to cover theCeltic languages, such asIrish,Manx,Scottish Gaelic,Welsh,Cornish, andBreton.

ISO-8859-14 is theIANA preferred charset name for this standard when supplemented with theC0 and C1 control codes fromISO/IEC 6429. CeltScript made an extension for Windows calledExtended Latin-8. Microsoft has assignedcode page 28604 a.k.a.Windows-28604 to ISO-8859-14.^{[2][better source needed]} FreeDOS assignedcode page 58163 to ISO-8859-14.^[3]

ISO-8859-14 was originally proposed for theSami languages.^[4]ISO 8859-12 was proposed for Celtic.^[5] Later, ISO 8859-12 was proposed forDevanagari, so the Celtic proposal was changed to ISO 8859-14. The Sami proposal was changed toISO 8859-15,^[6] but it got rejected as an ISO/IEC 8859 part, although it was registered asISO-IR-197.^[7]

The original proposal used a different arrangement of points0xA1–BF.^[5] At thecommittee draft stage of the specification, adotless i was included at 0xAE,^[8] which was changed to aregistered trademark sign (matchingISO-8859-1) in the final publication.

ISO-IR-182, an earlier (registered in 1994) modification ofISO-8859-1, had added the letters Ẁ, Ẃ, Ẅ, Ỳ, Ÿ, Ŵ, Ŷ and their lowercase forms (except for ÿ, which was already included) forWelsh language use.^[9] The final published version of ISO-8859-14 includes these letters in the same positions which they appear at in ISO-IR-182.

Differences fromISO-8859-1 have the Unicode code point number below the character.

The first draft had positions A0-BF different. It did not include the pilcrow sign, but included the cent sign instead at its Latin-1 position. Later, it was ruled that the pilcrow sign was more common, so the pilcrow sign remains at its Latin-1 position, and the cent sign was removed instead.

Differences from ISO-8859-14 have the Unicode code point below them.

• ISO/IEC 8859-14:1998
• ISO-IR 199 Celtic Supplementary Latin Set(May 1, 1998, submitted by Irish body NSAI/AGITS/WG6)

• ISO/IEC 8859
• Computer-related introductions in 1998
• Celtic languages

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