Kajan Johnson (born April 21, 1984) is a retired Canadian mixed martial artist who most recently competed in the lightweight division of the UFC.

Starting in October 2005, Johnson went 11–1–1 over five years with his only loss coming in a title fight for the KOTC Canadian Lightweight Championship against future UFC top contender and training partner Rory MacDonald.

In late 2013 it was announced that Johnson will be one of the Canadian fighters picked to be on TUF Nations Team Canada.

[12] Kajan later apologised though nevertheless Tyler was removed from the UFC roster and remains inactive yet undefeated .

[13] Johnson made his promotional debut at UFC 174, taking on Tae Hyun Bang.

[19] Returning from a near two-year hiatus, Johnson faced Adriano Martins at UFC 215 on September 9, 2017.

[21] Johnson was scheduled to face Rustam Khabilov on March 17, 2018, at UFC Fight Night 127.

[29] On September 29, 2018, Johnson revealed that the fight with Khabilov was the last of his contract and the UFC had not made any attempts to re-sign him.