Check representation (possibly Hungary or Poland): Lithuania doesn’t have an embassy in Bangkok. Often, Polish or Hungarian embassies represent Lithuania for visas in various regions. It’s important to verify who handles Lithuania in Thailand: as of 2025, the Hungarian Embassy in Bangkok may handle it (similar to Latvia) or possibly the Polish Embassy in a nearby country. In practice, you will apply via VFS Global – likely under the country that represents Lithuania (ask VFS if unsure when booking).
Documents: Prepare everything by the book – application form, photos, travel insurance, flight, accommodation, proof of relationship, etc. If your partner is Lithuanian, an invitation letter from them is key. If they can get an official invitation approved by Lithuanian authorities (not common unless for family visit), great, but a personal letter is usually accepted. Include their ID and address.
Financial and sponsor details: Show adequate funds (Lithuania’s cost of living is moderate, but they will expect you have enough for your stay). If sponsored by your partner, include their financial proofs and a letter. Because representation is involved, any ambiguity in finances can cause delays (the representing embassy might need to ask Lithuania for advice). So, err on the side of providing more evidence (like 6 months of bank statements, not just 3).
Proof of return: Emphasize ties to Thailand. Given that Lithuania isn’t a common destination for Thai overstays, the decision should be straightforward if you show you have a stable situation here. Still, include your work documents or similar. The processing might be done by Hungary’s embassy, which we know values proof of return – so include those documents (job letter, etc.) to meet their expectations.