Kelvin (disambiguation)
Kelvin could refer to:
 Kelvin, a unit of temperature
 , an early 23rd century starship
 Kelvin Memorial Archive, the Section 31 facility bombed by Thomas Harewood
Kelvin Memorial Archive personnel, those employed there
 Kelvin pod, an escape pod class
 , a type of early 23rd century starship
 Kelvin-type shuttlecraft, a type of early 23rd century shuttlecraft

Real world:
 Kelvin timeline, an alias of the alternate reality created due to time travel by Narada spaceship

You may also be looking for:
 Kelvan, an alien species from the Andromeda Galaxy