Sahaidachnyi

Sahaidachnyi is a Ukrainian surname. It may refer to:


 * Petro Konashevych-Sahaidachny (c. 1582–1622), Ukrainian political, civic, and military leader
 * Ukrainian frigate Hetman Sahaydachniy, a frigate of the Ukrainian Navy
 * Hetman Petro Sahaidachnyi National Ground Forces Academy in Lviv, Ukraine
 * Hetman Sahaidachny, a racing yacht