In some states, a domestic partnership is a legally recognized relationship between members of a same-sex couple, with rights similar to those of a marriage relationship.
As of the knowledge cutoff in 2023, Missouri does not legally recognize domestic partnerships. The state does not offer a registry for domestic partnerships nor does it provide state-level legal rights similar to those of marriage for same-sex or opposite-sex couples who are not married. However, some cities or municipalities within Missouri may have their own ordinances that recognize domestic partnerships and provide certain local-level benefits. It's important to note that same-sex marriage has been legal nationwide since the Supreme Court ruling in Obergefell v. Hodges in 2015, which means that same-sex couples in Missouri have the same rights to marry as opposite-sex couples and to receive all the state and federal benefits that come with marriage.