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- Sita Ram Lalas (India, born 1909) Rajasthani language historical dictionary
- Pierre Larousse (France, 1817–1875) French language general dictionary and encyclopedic dictionary
- Donald Laycock (Australia, 1936–1988) languages of Papua New Guinea
- James Legge (UK/China, 1815–1897) Chinese language
- George William Lemon (UK, 1726–1797) English language etymological dictionary
- Matthias von Lexer (Germany, 1830–1892) German language historical dictionary
- Henry Liddell (UK, 1811–1898) Greek and English bilingual lexicon
- Sven Lidman (Sweden, born 1921) Swedish encyclopedic dictionary
- Lin Yutang (China/USA, 1895–1976) Chinese and English bilingual dictionary
- Samuel Linde (Poland, 1771–1847) Polish language general dictionary
- Émile Littré (France, 1801–1881) French language general dictionary
- Thomas Lloyd (Wales, 1673–1734) Welsh language
- Elias Lönnrot (Finland, 1802–1884) Finnish and Swedish bilingual dictionary
Read more about this topic: List Of Lexicographers