Hardev Bahri (Punjabi: ਹਰਦੇਵ ਬਾਹਰੀ, Hindi: हरदेव बाहरी, romanized: Hardev Bāhrī, also Bahari; 1907—2000) was an Indian linguist, literary critic, and lexicographer of the 20th century, notable for his work in Hindi, Punjabi, and other related Indo-Aryan languages. He compiled numerous monolingual and bilingual dictionaries for both general and technical purposes in collaboration with the publisher Rajpal and Sons.