Leustach I Rátót

Leustach Rátót (Rátót nembeli (I.) Leusták, "Leustach (I) from the kindred Rátót") was a Hungarian distinguished nobleman from the gens Rátót, ancestor of the Palatine and Gyulafi branches. According to a royal charter from 1230, he served as voivode of Transylvania from 1176 to c. 1196, thus he was the first reliably attested person to hold that office.

Leustach, alongside palatine Ampud (Ompud), was commissioned to lead the Hungarian reinforcements sent to the Byzantine Empire against the Seljuks in the Battle of Myriokephalon of 1176. The battle ended with the victory of the Seljuks.