Lithuania

For the general case

Lithuanian law recognizes a marriage’s formation as valid if it complied with the law of the place it happened, or with the law of either spouse’s habitual residence or citizenship, with a narrow exception for couples who both live in Lithuania and married abroad specifically to dodge a Lithuanian legal restriction that wouldn’t otherwise apply.

This is a reasoned reading of Lithuania's Civil Code provisions on marriage form, among the thinner-sourced questions in this library on the self-solemnization point specifically; we found no Lithuanian case or agency guidance addressing an officiant-free marriage by name. Treat as favorable but untested, and confirm with a Lithuanian family law practitioner if certainty matters for your situation.

Lithuanian citizens are expected to register a foreign marriage with a Lithuanian civil registry office, submitting the apostilled and translated certificate.

Same-sex couples: a live, unsettled legal fight

This is worth flagging clearly rather than giving a confident answer either way. Lithuania doesn’t have marriage equality, and its constitution is understood to define marriage as between a man and a woman. But unlike a settled “no,” Lithuania’s courts have been actively ruling on this: its Constitutional Court found the total absence of any legal recognition option for same-sex couples unconstitutional, and at least one court has separately ordered a specific same-sex couple’s relationship registered. Lithuania’s Justice Ministry has been appealing decisions like that, and a partnership bill has been introduced to parliament with recent case-by-case court-ordered registrations happening alongside, rather than a single clear rule.

This situation was actively changing ruling to ruling as of our most recent sources, and given how fast it's moving, treat anything stated here as a snapshot, not a current answer. If this applies to you, check the most recent status directly rather than relying on this page, and see does it matter if we're a same-sex couple for the broader pattern of how unevenly this plays out across the EU.

What this means practically

• If you’re an opposite-sex couple and either of you is Lithuanian, this is reasonably favorable ground; register the marriage afterward and keep your apostilled Colorado certificate ready.
• If you’re a same-sex couple and either of you is Lithuanian, don’t assume either outcome; this is one of the few truly fluid legal situations in this entire library, and it’s worth checking current status directly rather than relying on any fixed answer, including this one.

See does it matter what country we’re from for the broader picture.