Ajay Singh may refer to:

• A. K. Singh (Ajay Kumar Singh), Lieutenant Governor of Andaman and Nicobar Islands (2013–2016), Lieutenant Governor of Puducherry (2014–2016)
• Ajay Singh (Karnataka politician) (born before 1992), Indian politician from the state of Karnataka
• Ajay Singh (diplomat) (born 1950), High Commissioner of India to Fiji
• Ajay Singh (Madhya Pradesh politician) (active 2008), Indian politician from the state of the Madhya Pradesh
• Ajay Singh (footballer) (born 1989), Indian footballer
• Ajay Singh (entrepreneur) (active from 2005), owner of SpiceJet
• Ajay Singh Kilak, Indian politician in Rajasthan; see List of ministers in Government of Rajasthan
• Ajay Kumar Singh (disambiguation), various people
• Ajay Pratap Singh, Indian politician
• Ajay Raj Singh (born 1978), Indian sprinter

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