I (disambiguation)
I is the ninth letter of the Latin alphabet. I or i may also refer to: == Language == I (pronoun), the first-person singular subject pronoun in English ı, dotless I (lowercase), Latin letter used in Turkish and Azerbaijani İ (uppercase), dotted I, used in the Latin-script alphabets of Azerbaijani, Crimean Tatar, Gagauz, Kazakh, Tatar, and Turkish I (Cyrillic) (И и), a letter used in almost all ancient and modern Cyrillic alphabets Dotted I (Cyrillic) (І і), used in the orthographies of Belarusian (in replacement of Cyrillic И), Kazakh, Khakas, Komi, Carpathian Rusyn and Ukrainian Iota, the letter in the Greek alphabet, uppercase Ι, lowercase ι I (kana), one of the Japanese kana that each represent one mora I, male prefix to some Balinese names In the International Phonetic Alphabet i, close front unrounded vowel ɨ, close central unrounded vowel ɪ, near-close near-front unrounded vowel == Science, technology, and mathematics == === Biology === Troponin I, one of the three troponins Haplogroup I (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup Haplogroup I (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup Olfactory nerve, the 1st cranial nerve in human anatomy the Lợn Ỉ or Vietnamese Pot-bellied pig === Chemistry === Iodine, symbol I, a chemical element I, isoleucine, an amino acid I, ionic strength in a chemical solution i, Van 't Hoff factor === Computing === i, a common generic index variable often used in program loops <i>, an HTML element for marking italic type .i, the common filename extension for a file that contains the output from a preprocessor i-, a prefix for Apple products and services e.g.