Is It Legal To Marry Your Cousin In Connecticut

Unlike many states, Connecticut permits marriage between first cousins under state law. Here’s an examination of Connecticut’s regulations concerning cousin marriage.

Marriages Between Siblings are Banned

Connecticut statutes prohibit marriage between biological siblings as well as half-siblings, step-siblings, and adoptive siblings. These relationships are considered incestuous under Section 46b-21 of the general statutes.

Attempting to marry or engage in sexual conduct with a sibling is a felony offense in Connecticut, punishable by up to 10 years in prison. However, first cousins are not included in the prohibited degrees of kinship.

First Cousins Can Legally Marry

In contrast to the bans on sibling relationships, first cousin marriage is fully permitted in Connecticut. There are no prohibitions or limitations imposed under state law on marrying your biological first cousin.

This allowance includes double first cousins, who share both sets of grandparents. Despite the closer genetic connection, they may still legally wed in Connecticut.

No Special Requirements for First Cousins

Additionally, Connecticut does not impose any extra prerequisites for first cousins to marry like genetic testing, medical screening, or proving infertility.

First cousins have the same marriage rights and responsibilities as unrelated couples under Connecticut law. They can marry under the standard marriage statutes.

Second Cousins Have Marriage Rights Too

It’s also worth noting that second cousins and more distant relations have no marriage restrictions nationwide. Laws focused on consanguinity exclusively address first cousin couples across most states.

Social Stigma Still Exists

While legal, marriages between first cousins may still face social disapproval in Connecticut due to traditional taboos. Laws are gradually changing, but cultural biases often persist.


In summary, Connecticut places no restrictions on first cousin marriage, granting biological cousins full marital rights and responsibilities. But prospective couples should still prepare for possible skepticism from others.

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