U+040A Cyrillic Capital Letter Nje

The Wikipedia has the following information about this codepoint:

Nje (Њ њ; italics: Њ њ; also called nye) is a letter of the Cyrillic script.

It is a ligature of the Cyrillic letters En ⟨н⟩ and Soft Sign ⟨ь⟩. It was invented by Vuk Stefanović Karadžić for use in his 1818 dictionary, replacing the earlier digraph ⟨нь⟩. It corresponds to the digraph ⟨nj⟩ in Gaj's Latin alphabet for Serbo-Croatian.

It is today used in Macedonian, variants of Serbo-Croatian when written in Cyrillic (Bosnian, Montenegrin, and Serbian), Itelmen and Udege, where it represents a palatal nasal /ɲ/, similar to the ⟨ny⟩ in "canyon" (cf. Polish ⟨ń⟩, Czech and Slovak ⟨ň⟩, Latvian ⟨ņ⟩, Galician and Spanish ⟨ñ⟩, Occitan, Portuguese and Vietnamese ⟨nh⟩, Catalan and Hungarian ⟨ny⟩, and Italian and French ⟨gn⟩).

Nje is commonly transliterated as nj but it is also transliterated ń or ņ.