Humberside Police officers were bitten and kneed in the groin in incidents which happened last night in Grimsby and Cleethorpes.
The force has condemned the actions on those putting themselves in the line of fire to help protect the public.
One officer was bitten by a man suspected of stealing coffee from a convenience store in Cleethorpes.
Another was kneed in the groin by a man suspected of ABH and making threats to kill following an incident at a property in the Heneage ward of Grimsby.
North of the Humber, a third officer was headbutted when dealing with a teenager accused of causing criminal damage to properties in the St Andrew’s ward of Hull.
All three suspects are now in custody.
Humberside Police said there were 309 incidents where officers were assaulted in the last year, four of which caused GBH or wounding.
Assistant Chief Constable Chris Noble said: “Our officers put themselves in harm’s way to help protect innocent people.
“There is no acceptable level of violence against police officers and staff.
“Attacking them as they go about their duties is simply not acceptable and we will take action against anyone found to be doing so, as well as ensuring we support the staff concerned.”