Guernsey Police have been asked to investigate a number of incidents where drivers have been threatened by passengers.
A spokesperson for CT Plus says that drivers on the night bus routes have been threatened on many separate occasions.
"Since the easing of lock-down there have unfortunately been too many examples where a small minority of passengers have threatened bus drivers. The Police have been required to be involved in these matters on occasions."
The company says the decison to stop the services will be reviewed at the end of April.
"This decision is not taken likely and is not influenced by the current driver shortage. We apologise for any inconvenience this may cause. However, the safety of both staff and passengers is upmost, and it is with regret that the service is being suspended."
CT Plus introduced the night bus service to Guernsey in 2017 and has extended the routes served due to their popularity. Passengers pay a single fixed fare.

18 months before work can begin on resurfacing Alderney's runway
Guernsey man reflects on surviving 9/11 on the 25th anniversary
Temporary traffic lights removed from key St Peter Port route sooner than expected
New car for Guernsey's Meals on Wheels fleet
Major power cut switches off most of Alderney
Perfect evening for Guernsey's 2026 Air Display
The Red Arrows pull out of performing over Guernsey
Guernsey's Ladies' Pool reopens after pollution incident