Both the officers will have a tenure of two years.
Jain, who is at present serving as the Special Director in the IB, will take over on January 1 after the incumbent Dineshwar Sharma completes his two-year tenure on December 31.
A recipient of President’s Police Medal, the 1980-batch officer has served in various departments of the IB including the sensitive Kashmir desk.
He was advisor to the previous NDA government’s interlocutor on Kashmir K C Pant when talks were held with separatist leaders like Shabbir Shah.
In another appointment, Anil Dhasmana will take over the reins of the Research and Analysis Wing, an organisation which looks after the external intelligence of the country.
He succeeds Rajinder Khanna who completes his tenure this year end.
Dhasmana, a 1981-batch officer of Madhya Pradesh cadre, has been with RAW for the last 23 years during which he has served on important desks including Pakistan.