The term "OWO" can stand for multiple things depending on context. Common meanings include:

• A cute face expression used in online chatting and anime culture (similar to "UwU").
• Acronyms such as "One Way Out," "Only Way Out," or "Oral Without" (in prostitution context, meaning oral sex without a condom).
• Other less common meanings include "Old World Order," "Outdoor Writers of Ohio," or "One World Observatory."

The most popular meaning online is as an emoticon representing a surprised or excited face, often used in texting or roleplaying communities.