The meaning of the Acronym GNIS is...

GNIS is

• Global Names Information System
• Geographic National Information Service
• Global Ndt Internet Superhub
• Geglobal Ndt Internet Superhub

More Meanings For GNIS:

• Global Names Information System
• Geographic National Information Service
• Global Ndt Internet Superhub
• Geglobal Ndt Internet Superhub
• Geographic Names Information System

GNIS is also in:

• Unfiled
• US Government