Zombies are animated bodies with no soul. In Sapkowski's books zombies are not specifically mentioned, only of the practice of necromancy, which is forbidden by the Πρώτου Κεφαλαίου. Necromancy is used for the purpose of extracting information from the (usually) recently deceased. The "interviewees" could be considered zombies. One example of the spell being used is when Visenna used it to briefly revive Manissa.
Στο παιχνίδι The Witcher
Some of the earlier artwork for the game shows that at least some female zombies were considered as monsters. From the look of the concept art, it is possible these evolved into the devourers found there now.
Στο παιχνίδι για υπολογιστή The Witcher 2: Assassins of Kings
In the Arena mode, Γκέραλτ can face a Zombie Swordsman and a Zombie Arbalist.