It should be there — right next to Australia.

But New Zealand has disappeared from the world’s maps. The country — home to 4.7 million people — has been left off charts displayed at the Smithsonian Institution, the Central Park Zoo, Ikea and Starbucks.

Fear not: Prime Minister Jacinda Ardern is on the case, if only reluctantly. A new video, created by the government’s tourism department and featuring both Ms. Ardern and the country’s trademark deadpan humor, has gone viral, racking up thousands of views by Friday just days after going online.

It is the latest in a series of videos created by New Zealand government agencies and advocacy groups that use comedy to discuss sometimes-serious topics including racism, drunken driving and homophobia.