Lehel (Hungarian: Lél; died 955), a member of the Árpád dynasty, was a Magyar chieftain and, together with Bulcsú, one of the most important figures of the Hungarian invasions of Europe. After the Magyar defeat at the Battle of Lechfeld, he was executed in Regensburg.
The medieval chronicler Anonymus calls Lehel the son of Tas, who was one of the "Seven chieftains of the Magyars", and descendent of late Grand Prince Árpád. Most historians agree that there is a mismatch in the timing, though he should be the son of Tas, who is mentioned as a grandson of Árpád by Emperor Constantine VII.
Lehel's dukedom from about 925 was the Principality of Nitra, where he ruled in the former Kabarian lands. The historic cities of Alsólelóc and Felsőlelóc (in present-day Slovakia) kept the name of Lél. His dukedom could also refer to the status of Lél being a crown-prince and duke-to-be.
In the military conflict with East Francia, Lehel, together with Bulcsú, who presumably was not a descendent of the Árpád, and Súr led the Magyar forces under Grand Prince Zoltán into the Battle of Riade in 933. When in Spring of 954, the Magyars again attacked the Duchy of Bavaria, Lehel also led the Nitrian Kabars. The Hungarian troops advanced up to Lotharingia, where they signed an armistice with the Salian prince Conrad the Red and fought against his rival Duke Bruno the Great. The next year, they met with the united East Frankish forces under King Otto I at the Battle of Lechfeld near Augsburg.