Can you get a duplicate if you lost your birth certificate?

I'm not sure if you are referring to the marriage license before the ceremony or if you mean a copy of the marriage certificate after you've been married. If you need a copy of the license before the ceremony, you should contact the office where you obtained the marriage license. There may be a small fee for a copy. The marriage license is usually valid for 30 or 60 days, depending on the County. If you are referring to getting a copy after the ceremony, the official submits the document to the County for filing. You should contact the County where the ceremony was held. Using the attached website link, you can access marriage license and marriage record information for all of the counties in all 50 states. Depending on the State, some records may be at the State level or City level rather than the County level. Click on your State and then scroll to your specific County for exact information.