Ivan Hadzhinikolov
Ivan Atanasov Hadzhinikolov (Bulgarian: Иван Атанасов Хаджиниколов, Macedonian: Иван Атанасов Хаџи Николов, romanized: Ivan Atanasov Hadži Nikolov; December 24, 1861 – July 9, 1934) was a Macedonian Bulgarian revolutionary, teacher and bookseller. He was among the founders of the Internal Macedonian Revolutionary Organization (IMRO) on October 23, 1893.