Linked from
The 17 pages that link to Kelvin, each with the reason it gives.
TemperatureRelated: It expresses temperature on an absolute scale used throughout physical science.
SI base unitRelated: It is the base unit assigned to thermodynamic temperature.
CryogenicsRelated: Cryogenic temperatures are conventionally stated on the kelvin scale.
Absolute zeroRelated: Its zero point gives absolute zero the exact value 0 K.
ThermometerRelated: Scientific thermometers often report measurements in kelvins.
Cryogenic coolingRelated: Cryogenic operating points are specified in kelvins, often far below 1 K.