If you are a U.S. citizen who wants to bring your foreign fiancé(e) to the United States in order to get married then you can file for K-1 nonimmigrant visa.

In order to obtain a K-1 fiancé(e) visa, you and your fiancé(e) must intend to marry each other within 90 days of your fiancé(e) entering the U.S as a K-1 nonimmigrant. Your marriage must be valid, meaning both you and your fiancé(e) have a legitimate intent to establish a life together and the marriage is not for the sole purpose of obtaining an immigration benefit.