Isle of Man-based finance companies have been instructed to freeze Russian assets.
The move is in line with sanctions imposed by the UK after Russian President Vladimir Putin ordered troops into rebel-held regions of Ukraine.
Three men and five banks have been targeted after the Manx government mirrored the response announced by UK Prime Minister Boris Johnson.
In a statement issued this week the Isle of Man government said: "Financial institutions and other persons are required to check whether you maintain any accounts or otherwise hold funds or economic resources for, or provide financial services to, designated individuals.
"If so, you must freeze such accounts or other funds and, unless licensed by the Treasury, not deal with those funds or economic resources, and suspend the provision of any financial services".
Alcohol licence for Braddan Roundhouse?
TT-liveried replica bikes up for grabs
Tynwald to hear concerns over historic police station sale plan
Island to host top level chess tournament again
TT food festival applies for planning permission
Missing mail on MHK's mind
Mountain Road fully reopens after TT work
MHK to address Tynwald after UK blocks assisted dying law