One thing to consider when talking about the coolest national flags is that there are quite a few interesting national flags in existence. Some of them are quite colorful while others have unique designs that make them stand out. However, the coolest national flag in the world at this moment, in my opinion, is the national flag of Albania.
The nation of Albania adopted its current flag relatively recently in 1992. The Alabanian flag features a bold red background in addition to a double-headed eagle's silhouette. This silhouette has its origins in the Byzantine Empire's symbol, since Albania was once part of the Byzantine Empire.
There are many countries to consider when talking about the coolest country flags. However, one country that you might not have expected to make this list is the small nation of Belize. The national flag of Belize emphasizes how important the mahogany industry is to the national economy of Belize. Belize's national flag includes its motto, Sub Umbra Floero, which translates to "Under the Shade I Flourish" in English. Additionally, the national flag of Belize includes two woodcutters as well as a large mahogany tree above them.
Another country that deserves to be in the conversation for the coolest country flags is the South American nation of Brazil. Now, Brazil has quite a recognizable national flag, which you have likely seen several times. The Brazilian flag includes a green background, a blue globe, and white stars that represent the various states of Brazil.
In this way, the national flag of Brazil shares some similarities with the national flag of the United States of America. Brazil adopted its current national flag all the way back in 1889, but they updated the flag to add six stars in 1992. The Brazilian flag also includes its national motto, which is Ordem e Progresso. This translates to "Order and Progress" in English.
Continuing the trend of smaller nations on this list, Bhutan also has quite a cool and unique national flag. The national flag of Bhutan includes the Thunder Dragon in white. The dragon being in white represents both purity and loyalty. The background's orange part represents the Drukpa monasteries in Bhutan, while the yellow portion represents the royal family's authority. Bhutan adopted its current national flag in 1969.
Wales is part of the United Kingdom, so many sources do not consider it a sovereign state so much as a constituent nation. However, there is no dispute that the national flag of Wales is among the coolest in the world. The Welsh flag features a winged, four-legged dragon with a spiked tongue and tail brandishing its claws while standing on a split background that is green on its lower half and white on its upper half.