Hawaii is one of the many states that permits marriage between first cousins under state law. Here’s an overview of Hawaii’s regulations regarding unions between biological first cousins.

Cousin Marriage is Legally Allowed

According to Section 572-1 of the Hawaii Revised Statutes, marriage between biological first cousins is legal within the state. There are no prohibitions or limitations imposed on marrying your first cousin in Hawaii.

This allowance also extends to double first cousins, who share both sets of grandparents rather than just one. Despite the closer genetic tie, double first cousins may legally marry as well under Hawaii law.

No Special Requirements for Cousins

Additionally, Hawaii does not impose any extra prerequisites for first cousins to marry such as genetic testing, medical examinations, or proving infertility.

First cousin couples in Hawaii enjoy the same marriage rights and process as non-related couples when applying for a marriage license. They can marry unimpeded.

Interstate Recognition Not Guaranteed

However, it’s worth noting that marriages between first cousins, while valid in Hawaii, are not guaranteed to be recognized in all other states. Laws vary nationwide.

Moving or traveling out of state poses potential complications around legal recognition and benefits for first cousin marriages. Couples should research relevant laws.

Social Stigma Still Exists

Also, even though permitted by law, marrying a first cousin may still face social disapproval in some Hawaiian communities. Surveys show many residents have concerns about potential health effects.

So while legally allowed, first cousin couples may encounter skepticism, judgment or rejection from certain friends and family members who view the relationships as taboo.


In summary, Hawaii places no restrictions on marriages between consenting adult first cousins, granting them full marital rights. But social attitudes may still pose challenges, and legal recognition in other states is uncertain. Cousins considering marriage should research the law thoroughly.