CJK Unified Ideographs Extension D

{{for|a list of all CJK characters encoded in Unicode|CJK Unified Ideographs}}

{{Infobox Unicode block

|rangestart = 2B740

|rangeend = 2B81F

|script1 = Han

|6_0 = 222

|note = {{Cite web|url=https://www.unicode.org/ucd/|title=Unicode character database|work=The Unicode Standard|accessdate=2023-07-26}}{{Cite web|url=https://www.unicode.org/versions/enumeratedversions.html|title=Enumerated Versions of The Unicode Standard|work=The Unicode Standard|accessdate=2023-07-26}}

}}

CJK Unified Ideographs Extension D is a Unicode block containing uncommon CJK ideographs for Chinese, Japanese, Korean, and Vietnamese, some of which are in current use. Much smaller than most Unicode blocks for CJK unified ideographs, Extension D consists of characters which were submitted to the Ideographic Research Group as "urgently needed characters" between 2006 and 2009. Characters submitted during the same period which were needed less urgently were included in CJK Unified Ideographs Extension E instead.{{citation|mode=cs1 |url=https://www.unicode.org/versions/Unicode15.0.0/ch18.pdf#page=6 |pages=741–744 |title=18.1: Han (§ Blocks Containing Han Ideographs) |work=The Unicode Standard: Core Specification |version=Version 15.0 |year=2022 |isbn=978-1-936213-32-0 |institution=Unicode Consortium}}

The block has hundreds of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD).{{Cite web|url=https://www.unicode.org/ivd/|title=Ideographic Variation Database|publisher=Unicode Consortium}}{{Cite web|url=https://www.unicode.org/reports/tr37/|title=UTS #37, Unicode Ideographic Variation Database|publisher=Unicode Consortium}}

These sequences specify the desired glyph variant for a given Unicode character.