I is the ninth letter of the Latin alphabet. Its English name is i (pronounced /aɪ/).
In Semitic, the letter Yôdh was probably originally a pictogram for an arm with hand, derived from a similar hieroglyph that had the value of a voiced pharyngeal fricative (/ʕ/) in Egyptian, but was reassigned to /j/ (as in English "yes") by Semites, because their word for "arm" began with that sound. This letter could also be used for the vowel sound /i/, mainly in foreign words.