Zaragamba – The original (as opposed to translated) name of the Hobbit-family from the Eastfarthing, hereditary Thains of the Shire, who passed on the office to the Tûk (Took) clan and removed to the strip of land between the Baranduin and the Old Forest. It has been translated from the Red Book as Oldbuck.

Zimraphêl (Ar-Zimraphêl) – The (Adûnaic) royal title assumed (under duress) by Míriel (Tar-Míriel), daughter and rightful heiress of Tar-Palantír, penultimate King of Númenor, after her forcible wedding to her uncle, the usurper of her throne.

Zimrathôn (Ar-Zimrathôn) – From 2962–3033 Second Age, the twenty-first King of Númenor, the second to take his royal title in an Adûnaic (rather than Eldarin) form. His rightful Quenya name was Tar-Hostamir.

Zirak-Zigil – The Dwarvish (Khuzdul) name for the centremost of the three great peaks of Moria, known to Men as the Silvertine and to Elves as Celebdil.