- Zahhak (Persian) – Dragon
- Žaltys (Baltic) – Serpentine fertility spirit
- Zamzummim (Jewish) – Giant
- Zana e malit (Albanian) – Mountain fairy who bless warriors
- Zână (Romanian) – Nature spirit
- Zashiki-warashi (Japanese) – House spirit
- Zburator (Romanian) – Wolf-headed dragon
- Zduhać (Slavic mythology) – Disembodied, heroic spirit
- Zeus (Greek) – God of lightning and storms
- Zennyo Ryūō (Japanese) – Rain-making dragon
- Zhar-Ptitsa (Slavic) – Glowing bird
- Zhulong (Chinese) – Pig-headed dragon
- Zhū Què (Chinese) – Fire elemental bird
- Žiburinis (Lithuanian) – Forest spirit in the form of a glowing skeleton
- Zilant (Tatar) – Flying chicken-legged reptile
- Zin (West Africa) – Water spirits
- Ziz (Jewish) – Giant bird
- Zlatorog (Slovenia) – White golden-horned deer
- Zmeu (Romanian folklore) – Giant with a habit of kidnapping young girls
- Zmiy – Slavic dragon
- Zombie (Vodou/Worldwide) – Re-animated corpse
- Zouyu (Chinese) - Long and big Cat-like Spirit with a long, red tail
- Zorigami (Japanese) – Animated clock
- Zuijin (Japanese) – Tutelary spirit
- Zunbera-bō (Japanese) – Faceless ghost