A
- Ivar Aasen (Norway, 1813–1896) Norwegian language
- Ilia Abuladze (Georgia, 1901–1968) Ancient Georgian
- Johann Christoph Adelung (Germany, 1732–1806) German language general dictionary
- George J. Adler (Germany/USA, 1821–1868) German and English languages
- Robert Ainsworth (UK, 1660–1743) Latin language
- Adam Jack Aitken (UK, 1921–1998) Scots language dictionary
- John Michael Allaby (UK, born 1933) English LSP dictionary
- Anthony Allen (UK, 16...–1754) English language dictionary of obsolete words
- Robert Allen (UK, born 1944) English language general dictionary
- Amerias (Greece, 3rd century BC) Ancient Macedonian
- Ethan Allen Andrews (USA, 1787–1858) Latin language
- Vladimir Anić (Croatia, 1930–2000) Croatian language general dictionary
- Ġużè Aquilina (Malta, 1911–1997) Maltese language
- Aristophanes of Byzantium (Greece, 257–180 BC) Ancient Greek
- Sue Atkins (UK, ?...–...) English and French bilingual dictionary
- Ali Azaykou (Morocco, 1942–2004) Arabic and Berber languages
Read more about this topic: List Of Lexicographers