Wa (Mongolic)
Wa is a letter of related and vertically oriented alphabets used to write Mongolic and Tungusic languages. Mongolian language 

 Transcribes Chakhar ; Transliterated into Cyrillic with the letter . Used to transcribe foreign words (originally for v in Sanskrit  /va/). Transcribes /w/ in Tibetan ཝ /wa/; Old Uyghur and Chinese loanwords. Indistinguishable from , except when inferred by its placement: typically between vowels, but also when it follows a consonant and precedes a vowel. Derived from Old Uyghur bet (), and waw (, before a separated vowel). Produced with  using the Windows Mongolian keyboard layout. In the Mongolian Unicode block,  comes after . Clear Script

Xibe language

Manchu language

Notes

References 

Articles containing Mongolian script text
Mongolic letters
Mongolic languages
Tungusic languages