Jurgis Bielinis (1846–1918) was one of the main organizers of the illegal book-smuggling at the time of the Lithuanian press ban (1864–1904). Bielinis is informally referred to as the King of Book Smugglers. Since 1989, Bielinis's birthday is commemorated as the Day of Book Smugglers.

Lithuanian book smugglers or Lithuanian book carriers smuggled Lithuanian language books printed in the Latin alphabet into Lithuanian-speaking areas of the Russian Empire, defying a ban on such materials in force from 1864 to 1904. In Lithuanian knygnešys literally means "the one who carries books". Opposing imperial Russian authorities' efforts to replace the traditional Latin orthography with Cyrillic, and transporting printed matter from as far away as the United States to do so, the book smugglers became a symbol of Lithuanians' resistance to Russification.