Ikos (oikos) is a liturgical hymn praising and glorifying a venerated saint or a religious event. Together, the ikoses and the kontakia compose the Akathist.

Izvod — a version of a canonic icon.

Icon-setting – a cased decoration on the icons covering the entire surface of the icon with the exception of face and hands, for which cuts are made.

Iconostasis – a solid screen built between south and north walls of the church separating the altar from the main body of the church. It consists of several rows (three to five) of systematically arranged icons.

Icon-painting – the branch of medieval Christian art, religious by themes and subjects and cultic by functionality.

Iconographer – master of icon-painting.

Iconography – a consistent system of the description of individuals and subjects.

Iconography – a consistent system of the description of individuals and subjects.