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The modifier letter prime (ʹ) is a spacing glyph. It is used in the romanization of Cyrillic for palatalized consonants (particularly for the letter ь) and in the orthography of the Skolt Sami for suprasegmental palatalization. It is encoded at U+02B9 ʹ MODIFIER LETTER PRIME.

See also

• single apostrophe U+02BC ʼ MODIFIER LETTER APOSTROPHE.
• single vertical line U+02C8 ˈ MODIFIER LETTER VERTICAL LINE.
• Similar symbol U+2032 ′ PRIME (′)