IPA Extensions is a block (0250–02AF) of the Unicode standard that contains full size letters used in the International Phonetic Alphabet (IPA). Both modern and historical characters are included, as well as former and proposed IPA signs and non-IPA phonetic letters. Additional characters employed for phonetics, like the palatalization sign, are encoded in the blocks Phonetic Extensions (1D00–1D7F) and Phonetic Extensions Supplement (1D80–1DBF). Diacritics are found in the Spacing Modifier Letters (02B0–02FF) and Combining Diacritical Marks (0300–036F) blocks.

IPA Extensions may refer to:

• Extensions to the IPA, extra symbols to be used in conjunction with the IPA, designed for transcribing disordered speech, and occasionally used for transcribing normal speech
• IPA Extensions unicode block, Unicode character block which encodes modern, historical, and proposed IPA symbols