For those who don't want to wait a month, Ukraine offers an accelerated "Marriage in 24 Hours" service. You can get married the same day or the next.
If you prefer the old-school charm or don't use Diia, you can visit any RAGS office regardless of where you are registered to live. Passports (original). Tax ID numbers (RNOKPP).
During the war, certain rules for military personnel allow for immediate marriage or even marriage via Zoom if one partner is at the front. If you tell me more about your situation, I can help with: Finding specific RAGS locations in your city. Detailed document checklists for foreign citizens. Explaining the legal shortcuts for military members.
If one partner is a foreigner, you need a translated passport (notarized) and proof of legal stay in Ukraine.
A quick check-in, signatures in a book, no music or speeches. Perfect for those planning a separate party later.