Dai Mehkan was a Centauri male who served in Starfleet during the 23rd century. In 2276, he was Starfleet Chief of Staff, and opposed James Kirk's involvement in the Rihannsu conflict. (TOS - Rihannsu novel: The Empty Chair)

Chiefs of Staff for the Federation Starfleet
	Jonathan Archer • Arthur Mason • Dai Mehkan • Marcus van Diemen • Harold Morrow • Robert Bennett • Les Landau • Gene Roddenberry