Omicron (disambiguation)

Omicron (Ο or ο) is the 15th letter of the Greek alphabet.

Omicron, Omikron, Ο or ο may also refer to:

Science

 * SARS-CoV-2 Omicron variant, a variant of the virus that causes COVID-19
 * Omicron (wasp), a genus of wasps
 * Polynucleobacter necessarius, a bacterium originally designated as Omicron (German: Omikron)

Other uses

 * ο, $\overline{ο}$, Οʹ, the number 70 in ancient, Byzantine and modern Greek numerals
 * Omicron (film), a 1963 Italian film
 * Omicron Hill, a summit in Alaska, US
 * Omikron: The Nomad Soul, an adventure video game