Sector 52043 was a region of space.

In the 2360s, there was a covert operation in this sector by the Bajoran splinter group Kohn-Ma. An alleged attack by this group on an orbiting monitoring station at Matiovsky IV was believed by Bajoran Intelligence to be an attempt at preventing the Cardassians from monitoring the group's activities. (DS9: "Past Prologue")

This sector was only mentioned in writing.