Krishnan Ajayan Nair (born 30 May 1979) is an Indian football player.
He last played for Chirag United Club Kerala in the I-League, as a midfielder.
At the age of 11, Ajayan represented Mahatma Club in the popular Seven's tournament.
Ajayan successfully completed his graduation and was awarded the Bachelor of Arts (Economics) degree with a first class.
Ajayan then joined SBT in 2000 where he played for the 4 years.