Z nomenclature (from the IAU and from unofficial sources)

Italics indicate farside features.

Note:
Is Van Langren's name Zylii really the last name in the ABC of (official and discontinued, or disallowed) Named Lunar Formations?

IAU nomenclature:
Zach
Zagut
Zahia, Rima
Zähringer
Zanstra
Zasyadko
Zeeman
Zelinskiy
Zeno
Zernike
Zhang Yuzhe
Zhiritskiy
Zhukovskiy
Zinner
Zirkel, Dorsum
Zi Wei (Chang'e-3 site)
Zöllner
Zsigmondy
Zucchius
Zupus
Zupus, Rimae
Zwicky


Unofficial nomenclature:
Z, the (A-11 region)
Zacynthus, Insula (bright area east of Lansberg)
Zamosci (IAU: the couple Steinheil and Watt)
Zander (see Tsander)
Zeeman, Mons (near Zeeman)
Zeno (see Riphaeus, Montes)
Zin, Desertum (the northern half of the dark halo around Tycho)
Zinger (Cassini C)
Zinger (see Tsinger)
Zola (south of Houtermans)
Zoroaster (Mare Humboldtianum)
Zungenspitze (at or near Mare Anguis)
Zylii (IAU: Theaetetus)