The 1983-batch officer will look after the security of the country's 59 airports as the Additional Director General (ADG) of the Central Industrial Security Force.
"He has taken over the charge," a senior official said.
The post had been vacant for some time after incumbent R R Verma took over as NCRB DG.
Before coming to the Centre, Singh was working as the ADG (Security) in his state.
Singh, in his earlier stints at the Centre, has served in the Prime Minister's security SPG and paramilitary CRPF.