Jo'Zamestaad is the title given to the leader of the Zamestaad, the planetary council of the planet Mestiko. (TOS eBook: Mere Anarchy: The Centre Cannot Hold)

Flen etHamwora of the nation-state of Gelta served as Jo'Zamestaad at the time of "The Pulse" in 2265. (TOS eBook: Mere Anarchy: Things Fall Apart) By 2267, Raya elMora of Larenda had risen to the office. (The Centre Cannot Hold)