| I with dot above | |
| Letter: | İ i |
| Script: | Latin script |
| Language: | Turkish language |
| Phonemes: | [{{IPAlink|i}}] [{{IPAlink|j}}] [{{IPA|ɪj}}] [{{IPA|əj}}] |
| Unicode: | U+0130, U+0069 |
| Fam1: | |
| Fam7: | Ιι |
| Fam9: | I i |
| Usageperiod: | 1928 to present |
| Sisters: | I ı |
| Direction: | Left-to-Right |
| Type: | alphabet |
| Typedesc: | ic |
İ, or i, called dotted I or i-dot, is a letter used in the Latin-script alphabets of Azerbaijani, Crimean Tatar, Gagauz, Kazakh, Tatar, and Turkish. It commonly represents the close front unrounded vowel pronounced as //i// except in Kazakh in which it additionally represents the voiced palatal approximant pronounced as //j// and the diphthongs pronounced as //ɪj// and pronounced as //əj//. All languages that use it use also its dotless counterpart I but not the basic Latin letter I.
See main article: Dotted and dotless I in computing. The dotted I is encoded into Unicode with the code point U+0130 (U+0069 for the lowercase letter) as part of the Latin Extended-A block.[1]
The dotted and dotless I characters have caused issues in computing. Languages like Turkish have four variants of the letter I (opposed to two in English). This causes problems when, instead of the original mapping of i to I, Turkish maps i to the new İ, and ı to I, frequently breaking software logic.[2]
Both the dotted and dotless I can be used in transcriptions of Rusyn to allow distinguishing between the letters Ы and И, which would otherwise be both transcribed as "y", despite representing different phonemes. Under such transcription the dotted İ would represent the Cyrillic І, and the dotless I would represent either Ы or И, with the other being represented by "Y".