Ajay Kumar Singh may refer to:
A. K. Singh (full name Ajay Kumar Singh), Lieutenant Governor of Andaman and Nicobar Islands Ajay Kumar Singh (Bihar politician, Bharatiya Janata Party), former member of the Bihar Legislative Assembly Ajay Kumar Singh (Bihar politician, Indian National Congress), Bihar Legislative Assembly representative from Jamalpur Ajay Kumar Singh (Bihar politician, Rashtriya Janata Dal), member of the Bihar Legislative Council Ajay Kumar Singh (Uttar Pradesh politician), member of the Legislative Assembly of India