Formerly the deputy chief, 49 year old Gary Roberts becomes the first Island officer to take the helm.
Mr Roberts started as a constable in Douglas 28 years ago and rose through the ranks.
His predecessor Mike Langdon fostered a neighbourhood policing approach which has seen crime in the Island fall to the lowest level of any British Isles police force.
Chief Constable Roberts is committed to sustaining that policy - if funds allow:
Remainder of TT 2026 cancelled
Race organisers confirm no more racing at this year's event
TT 2026: Further two-hour delay confirmed
Conditions around the course 'need to improve sufficiently'
Mountain Road closed 'with immediate effect'
'Due to current significant pressures on emergency services'
TT 2026: Organisers provide updates on rider conditions
Three riders 'conscious and stable' following Friday incidents
Drivers left confused as Telecabs seemingly ceases trading overnight
"This announcement has come out of the blue"