When you need to apostille a Indiana marriage certificate, you will need to make sure to have a certified copy of the vital record beforehand. If you need to order one, your best bet is to go through the Indiana Department of Health Division of Vital Records. Here's what their website says about obtaining one:
To obtain a certified copy of a marriage license or divorce decree, please contact the Clerk of Court in the county where the marriage or divorce was issued.
If the county in which the marriage license was issued is unknown, a search may be conducted using:
Indiana Courts’ Marriage License Public Lookup
Indiana State Library’s Indiana Marriages Database through 1850
Indiana State Library’s Indiana Marriages Database: 1958-2018
Apostille for Indiana Marriage Certificate
There is no margin for error with the Authentication or Apostille process. If mistakes are made, both your time and money will be wasted and you'll have to start all over again. If you want to look into outsourcing this part of preparing to studying abroad to someone with experience, please email me at email@example.com or call 848-467-7740 to request my services or learn more.