Circled Latin Small Letter O

Circled Latin Small Letter O at U+24DE is an enclosed lowercase o used when a letter needs to appear as a compact, self-contained label. It belongs to the Enclosed Alphanumerics block, alongside circled letters and numbers often used for markers rather than ordinary prose. Its main use is in lists, diagrams, forms, and educational material where circled letters identify choices, parts, or keyed annotations. For example, a workbook, map legend, or figure caption might mark one option as ⓞ to match a corresponding point in an illustration. It also appears in decorative or stylistic text, especially where writers want an alphabetic character to look like a badge, icon, or button label. Because it is a distinct symbol rather than a normal o with formatting applied, searches for plain “o” may not always match it, and it can be confused with a circled digit zero in small fonts.