Jan Chryzostom Zachariasiewicz (pronounced as /pl/; 1823–1906; Zacharyasiewicz, Zacharjasiewicz) was a Polish novelist and journalist.
Zachariasiewicz was born on 11 September 1823 in Radymno. During 1842–44 he was a prisoner of Špilberk Castle. Co-editor of Tygodnik Polski, where he published poem Machabeusze. For publishing this work and also for participation in Revolutions of 1848, Zachariasiewicz was imprisoned in Terezín for two years.He was a nephew or grandnephew of the bishop Franciszek Zachariasiewicz (1770–1845).
He died on 7 May 1906 in Krzywcza.
In Lviv Zachariasiewicz was publishing and editing magazines:
His notable novels include: