It indicates a void in some govt. records

• Abbr. for people with only two names
• Name placeholder in govt. records
• Abbr. for someone with only one given name
• Abbr. for someone with just a first and last name
• Letters for someone with just one given name
• Applications abbreviation
• Abbr. for someone with only two names
• Birth-cert. entry
• Abbr. for someone with just one given name

Wikipedia Word definitions in Wikipedia
NMI or nmi may refer to: