By Hawaii statutes,^[2][3] none of the following individuals may own, possess, or control any firearm:

• (No transfer of any rifle having a barrel length of 16 inches or over or any shotgun having a barrel length of eighteen inches or over, whether usable or unusable, serviceable or unserviceable, modern or antique, registered under prior law or by a prior owner, or unregistered shall be made to any person under the age of 18 years.) ^[4] 
• A fugitive from justice or prohibited from possessing a firearm or ammunition under federal law shall own, possess, or control any firearm or ammunition.
  • Any person who would be prohibited under this provision from owning, possessing, or controlling a firearm and ammunition solely as a result of a conviction for a crime that is not a felony and who is not prohibited from owning, possessing, or controlling a firearm or ammunition for any reason under any other provision of state or federal law, shall not be prohibited under this provision from owning, possessing, or controlling a firearm and ammunition if twenty years have elapsed from the date of the conviction.
• A person who is being prosecuted for one or more charges for a felony, a crime of violence, a criminal offense relating to firearms, or an illegal sale or distribution of any drug in a court in this state or elsewhere, or who has been convicted in this state or elsewhere of having committed a felony, or has been convicted in this state or elsewhere of having committed a felony, a crime of violence, a criminal offense relating to firearms, or an illegal sale or distribution of any drug shall own, possess, or control any firearm or ammunition; or
• Unless the said person establishes, with appropriate medical documentation, that they are no longer adversely affected by the criteria or statuses identified under applicable Hawaii law, a person who:
  • Is or has been under treatment or counseling for addiction to, abuse of, or dependence upon any dangerous, harmful, or detrimental drug, intoxicating compound,^[5] or intoxicating liquor;
  • Has been acquitted of a crime on the grounds of mental disease, disorder, or defect or any similar provision under federal law or the law of another state;^[6] 
  • Is or has been diagnosed with or treated for a medical, behavioral, psychological, emotional, or mental condition or disorder that causes or is likely to cause impairment in judgment, perception, or impulse control to the extent that presents an unreasonable risk to public health, safety, or welfare if the person were in possession or control of a firearm; or
  • Has been sentenced to:
    • Meet the criteria for involuntary hospitalization; or
    • Be an “incapacitated person,” as defined under the Hawaii law;
• No person who is less than 25 years old and has been adjudicated by the family court to have committed a felony, a crime of violence, a criminal offense relating to firearms, or an illegal sale or distribution of any drug shall own, possess or control any firearm or ammunition.
• Unless the minor establishes, with appropriate medical documentation, that they are no longer adversely affected by the addiction, mental disease, disorder, or defect, no minor shall own, possess, or control any firearm or ammunition if the minor:
  • Is or has been under treatment for addiction to any dangerous, harmful, or detrimental drug, intoxicating compound, or intoxicating liquor;
  • Is a fugitive from justice; or
  • Has been determined not to have been responsible for a criminal act or has been committed to any institution on account of a mental disease, disorder, or defect.
  • To enforce this section, or any other law to the contrary,^[7] any agency within the state shall make its records relating to family court adjudications available to law enforcement officials.
• No person who has been restrained under an order of any court, including a gun violence protective order, from contacting, threatening, or physically abusing any person shall possess, control, or transfer ownership of any firearm or ammunition so long as the protective order, restraining order or any extension is in effect. The protective order or restraining order shall specifically include a statement that possession, control, or transfer of ownership of a firearm or ammunition by the person named in the order is prohibited. The person shall relinquish possession and control of any firearm and ammunition owned by that person to the police department of the appropriate county for safekeeping for the duration of the order or extension thereof. At the time of service of a protective order or restraining order involving firearms and ammunition issued by any court, a police officer may take custody of any firearms and ammunition in plain sight, those discovered under a consensual search, and those firearms surrendered by the person restrained. If the person restrained is the registered firearm owner and knows the firearm’s location but refuses to abandon the firearm or disclose the firearm’s location, the person restrained shall be guilty of a misdemeanor. In any case, when a police officer cannot locate the firearms and ammunition either registered under this chapter or known to the person granted protection by the court, the police officer shall apply to the court for a search warrant for the limited purpose of seizing the firearm and ammunition.
• Any person disqualified from ownership, possession, control, or the right to transfer ownership of firearms and ammunition under this section shall surrender or dispose of all firearms and ammunition;^[8]