Zanzi
Zanzibar
Zap
Zapata
Zapato (Spanish for "shoe")
Zapeli
Zaphod
Zaphod Beeblebrox (from Hitchhiker's Guide to the Galaxy)
Zappa
Zapper
Zappi
Zappy
Zaq
Zara
Zara (Arabic for "dawn")
Zarabeth
Zarathustra
Zarenna
Zaria (City in Nigeria)
Zarina
Zarko
Zarya (Russian for "sunrise")
Zaspanec (Slovenian for "sleepy")
Zasu
Zatara
Zathras
Zathrus
Zatney
Zaun
Zaw