Havel Medek of Valdek was a Bohemian noble. He was the son of Oldřich Medek of Valdek, the lord of Týnec nad Sázavou. Havel is mentioned as residing in Týnec in 1349. In 1390, Havel besieged Talmberk Castle, conquering it and capturing the lord Diviš of Talmberk. Havel then began styling himself as Medek of Talmberk.