23rd century

The 23rd century spanned the Earth years to .
== Major events ==
;2259, Alternate timelines
:The encounters a subspace anomaly that pulls , , and into a reality alternate to their own. In this reality, the Federation has been defeated by a malevolent being known as X, and is under his control. Kirk, Spock, and McCoy brave the harsh remains of Earth but are captured by the cunning of X's right hand man, .
;2265
:Several Starfleet officers from the travel back through time to stop a Devidian incursion on Drozana Station. Tala Jones assists Dr. Leonard McCoy in treating the crew of Drozana suffering from the Devidians' presence. The crew later returns to finish what they started, destroying in the Drozana system with the assistance of Montgomery Scott and Kardok.
=== Births ===
;Unknown year
:
;Unknown year, Alternate timelines
:
== Appendices ==
=== Notes and references ===
=== External links ===
=== Navigation ===