|Unicode name||LATIN CAPITAL LETTER I WITH MACRON|
|Unicode block||Latin Extended-A|
- (Latin script): Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Sſs Tt Uu Vv Ww Xx Yy Zz
- (Variations of letter I): Íí Ìì Ĭĭ Îî Ǐǐ Ïï Ḯḯ Ĩĩ Įį Īī Ỉỉ Ȉȉ Ȋȋ Ịị Ḭḭ Ɨɨɨ̆ ᵻ ᶖ İi Iı ɪ Ｉｉ ﬁ ﬃ IJij Ĳĳ
- (Letters using macron sign or underline sign): Āā Ǟǟ Ḇḇ C̄c̄ Ḏḏ Ēē Ḕḕ Ḗḗ Ḡḡ ẖ Īī Ḹḹ Ḻḻ Ṉṉ Ōō Ȫȫ Ṑṑ Ṓṓ Ṝṝ Ṟṟ Ṯṯ Ūū Ǘǘ Ǖǖ Ṻṻ Ȳȳ Ẕẕ Ǣǣ
Proposed in 1908 as part of the new Latvian spelling by the scientific commission headed by K. Mīlenbahs, which was accepted and began to be taught in schools in 1909. Prior to that, Latvian had been written in German Fraktur, and sporadically in Cyrillic.
Despite being an independent letter with its own position in the Latvian alphabet, Ī/ī, like all long vowels with macrons, is treated as a simple I/i in alphabetized lists (e.g., in dictionaries).