Nearly 100 PSNI officers have convictions, including for assault, harassment and firearm offences - accounting for almost half of the overall figure revealed in a probe by Sky News of UK police forces.
However, two-thirds of the forces did not respond to Sky.
The PSNI disclosed 99 serving officers had received criminal convictions while employed by the force, of which five were sergeants and the rest constables.
Offences included death by common assault, harassment, possession of a firearm/drunk in charge of a firearm and breach of data protection, as well as driving-related offences such as grievous bodily injury by careless driving, driving with excess alcohol and excess speed.
The figures were revealed by Sky, which made Freedom of Information requests to 45 police forces.
The forces employ at least 211 officers and police community support officers (PCSOs) who have been convicted of criminal offences.
However, the actual number is likely to be much higher as just a third of UK police forces disclosed how many of their serving officers had broken the law.
Police Scotland and Greater Manchester Police were among those which did not respond, while North Wales Police said 20 officers and five PCSOs have criminal convictions.
Policing Board member John Blair said: "This is a matter of concern to me and I am absolutely sure it will be a matter of concern to members of the public in relation to openness of policing and openness of accountability."
The Alliance MLA added: "I'll be asking that a full report be brought to the Policing Board, or the appropriate board committee, for full consideration."
The National Police Chiefs' Council insisted that having a criminal record has "never been an automatic bar to joining the police" and insisted officers are vetted "throughout their service", according to Sky News
The Police Federation of Northern Ireland stressed the figures needed to be put into perspective, adding the officers concerned have been "dealt with by the courts and been the subject of rigorous internal disciplinary procedures".
"The vast majority of our men and women are professional and dedicated officers who do their level best to safeguard our communities, often in most challenging circumstances," it said.
"They are caring and compassionate and these figures, although infinitesimal in overall terms, take no account of their courage and dedication."
The PSNI said it expects officers and staff to behave "professionally, ethically and with the utmost integrity at all times".
"Any deviation from those standards is unacceptable and any conduct, whether on or off duty, which brings or is likely to bring discredit on the police service may be investigated in order to establish whether or not a breach of the code of ethics has occurred," it explained.
Any code breach may result in a criminal investigation or Ombudsman probe, it added.