Iota (uppercase Ι, lowercase ι; ) is the ninth letter of the Greek alphabet. It was derived from the Phoenician letter Yodh. Letters that arose from this letter include the Latin I and J and the Cyrillic І (І, і), Yi (Ї, ї), Je (Ј, ј), and iotated letters (e.g. Yu (Ю, ю)). In the system of Greek numerals iota has a value of 10.

Hevein was a Finnish thrash metal band from Helsinki with symphonic metal and neo-classical metal influences.

Iota is the ninth letter of the Greek alphabet. It is also a term used in conversation to metaphorically suggest something very small (i.e. "the least iota").