Character
Ο
Unicode
U+039FHTML named
ΟHTML decimal
ΟLaTeX
OOmicron Symbol (ο) — Copy & Paste
Grab the omicron greek symbol in one click. Pronunciation: OH-mi-kron.
ΟUpper
οLower
Technical reference
Unicode, HTML entities, and LaTeX — tap the icon beside any value.
Character
ο
Unicode
U+03BFHTML named
οHTML decimal
οLaTeX
oCommon uses in science & math
Alphabet placeholder
Omicron is the 15th Greek letter. In math it is less common than ο’s look-alike, Latin o, so authors often prefer other letters.
Naming & variants
Appears in fraternity/sorority names and as a COVID-19 variant name—still useful to insert the true Greek form.
How to type Omicron
Windows
Grab ο from this page when Latin o is not acceptable.
macOS
Grab Greek omicron explicitly from this page.
Word & Google Docs
Use for Greek-language or fraternity letter-accurate text.
Prefer a full walkthrough? Read how to type Greek letters.
Related Greek letters
Omicron FAQ
Is Greek omicron the same as Latin o?
They look similar but have different code points (ο U+03BF vs o U+006F). Use Greek omicron when you need the real letter.