What do the French call the English Channel? It’s a fun fact: the English Channel, according to the French, looks like a sleeve. Therefore, the French refer to the famous body of water as “La Manche,” which means, literally, “the sleeve.”

So, now you know what the French people call the English channel, but let's take a closer look into why they call it this.
The English Channel, specifically, forms a natural line of delineation between Great Britain and Northern France. It continues on to join in with the North Sea and eventually feeds out into the Atlantic Ocean.
When asking what the French call the English channel, you may also wish to learn more about the name of the channel.
Some people theorize that, because of rocky relations between the French and the English, the French don’t like to refer to such a big, important landmark as English, which is where the “manche” name comes from, but this is doubtful considering the age of the reference. There are also theories that an ancient Celtic word meaning “channel” had a sound similar to “la manche” and led to the current name. There are other theories (and other names used in other languages) that make it nearly impossible to be sure.