- Zaar
- zabaglione
- Zabrze
- Zacharias
- Zachary Taylor
- zaftig
- zag
- Zaglossus
- Zagreb
- Zaharias
- zaire
- Zaire River
- Zairean
- Zairese
- Zairese monetary unit
- zakat
- zalcitabine
- Zalophus
- Zalophus californianus
- Zalophus californicus
- Zalophus lobatus
- Zama
- zaman
- zamang
- Zambezi
- Zambezi River
- Zambia
- Zambian
- Zambian kwacha
- Zambian monetary unit
- Zamboni
- zamia
- zamia family
- Zamia pumila
- Zamiaceae
- Zane Grey
- Zangwill
- Zannichellia
- Zannichellia palustris
- Zannichelliaceae
- Zantac
- Zantedeschia
- Zantedeschia aethiopica
- Zantedeschia rehmanii
- Zanthoxylum
- Zanthoxylum americanum
- Zanthoxylum clava-herculis
- Zanthoxylum flavum
- Zanthoxylum fraxineum
- Zanuck
- zany
- Zanzibar
- Zanzibar copal
- zap
- Zapata
- Zapodidae
- Zapotec
- Zapotecan
- zapper
- Zapus
- Zapus hudsonius
- Zaragoza
- Zarathustra
- zarf
- Zaria
- Zarontin
- Zarpanit
- Zarqa
- Zauschneria californica
- zayin