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:
Manx Utilities apologises for road closure amid 'essential maintenance'
White Hoe works caused significant traffic disruption in Douglas yesterday
Teen accused of wounding with intent to murder appears in court
19-year-old denies possessing knife at Cornaa Beach
Section of Quarterbridge Road to close for tree works
Diversions will be in place on Sunday 15 March
Concern in Northern Ireland over fishing visas
New restrictions imposed on who can fish Manx waters
DoI seeking 'fair and sustainable' solution to bus drivers' dispute
Political member for department provides update in House of Keys