What is the title of Unicode Technical Report #51, the report that defines emoji?

The title of Unicode Technical Report #51 is Unicode Emoji.

The Unicode Consortium created the report to improve interoperability: an emoji sent from one platform should be identified and handled consistently by another. The document discusses which characters can receive emoji presentation, when text-style or emoji-style display is appropriate, and how sequences such as skin-tone modifiers and zero-width-joiner combinations work.

The report is often confused with Unicode itself. Unicode is the larger character-encoding standard; Technical Report #51 is a specialized document about emoji behavior and data. It also does not dictate a single visual design. Apple, Google, Microsoft, and other vendors can draw the same Unicode emoji differently.

The document’s title has remained “Unicode Emoji,” although its status later became a Unicode Technical Standard rather than merely a Technical Report. That change does not alter the answer to the historical question about UTR #51: the report was named Unicode Emoji, not “Emoji Encoding” or “Unicode Symbols.”