Nigerian braille
Several braille alphabets are used in Nigeria. For English, Unified English Braille has been adopted. Three other languages have been written in braille: Hausa, Igbo, and Yoruba. All three alphabets are based on English readings, with the addition of letter's particular to these languages. Punctuation is as in English Braille.
The letters of these languages beyond the basic Latin alphabet are as follows:
Hausa Braille
Hausa includes| kw | sh | ts | ɗ |
from English q, sh, st, ed, and three derived letters:
| Basic letter: | b | k | y |
| Derived letter: | ɓ | ƙ | ƴ |
Hausa is presumably written in braille in Niger as well, since Ethnologue 17 reports that Zarma is written in braille in that country. However, this need not mean it uses the same alphabet as Nigerian Hausa.
Igbo Braille
Igbo Braille has| kw | ch | gh | sh |
from English q, ch, gh, sh, and six other letters with common international/African values:
| Basic letter: | b | e | i | o | u | - |
| Extended letter: | gb | ẹ | ị | ọ | ụ | ŋ |
Yoruba Braille
Yoruba Braille also has| kw | ṣ |
, and three derived letters:
| Basic letter: | b | e | o |
| Derived letter: | gb | ẹ | ọ |
The vowel assignments follow international conventions.