William Watton-Roberts has been jailed for four years for having a supply of cocaine with a street value of around £17,000.
Police found more than 50 grams of the Class A drug at his home in August 2023.
The 35-year-old from Chester appeared in the Magistrate's Court in February 2025 and admitted possession with intent to supply.
He has been sentenced by the Royal Court this week.
Detective Constable Carla Garnier said: “The safety of our community is always at the forefront of the States of Jersey Police.
“We will do our utmost to prosecute anyone who imports and/or deals drugs in Jersey and bring those responsible before the courts.”

Jersey and Guernsey's Chambers of Commerce saddened by Blue Islands' collapse
Aurigny announces inter-islands flights
Loganair steps in to take some Blue Islands routes
Blue Islands cancels upcoming flights as airline ceases trading
Simon Calder: 'To lose one airline is unfortunate, two looks like carelessness'
Jersey's minimum wage set to rise by 59p an hour
Parish of St Helier apologises for 'disrespecting' the Cenotaph
"Half an hour isn't long enough": Jersey Airport warns travellers to arrive on time