Question: So we call a French male "Frenchman", an English male "Englishman", and a Dutch male "Dutchman". what do we call Swiss males?

"Swissman" comes to mind, but it sounds like a cheesy version of Superman, like "Cheddarman" or "Mozzarellaman".

Answer: 
A man from Switzerland is called a **Swiss man**. 

You can tag the nouns: male; man/men; gentleman; guy/s; woman/women; girl; boy; baby etc. to any nationality. And rightly so, otherwise phrases like: 

> 
> "He married a Swiss"
> 
> 
> 

and 

> 
> "The other day while travelling into France by train, we talked to a very friendly Swiss"
> 
> 
> 

are needlessly vague or ambiguous.

Moreover, **Swiss man** should not be spelt as one word. Some other examples are an *Italian man*, a *Brazilian man* a *Chinese man*. I tend to spell **English man** as two words but it can be spelt as one word, likewise **Frenchman** and **Frenchwoman** are commonly used names. 

The words Englishman, Englishwoman, Frenchman, Frenchwoman, and Scotsman are [nouns](http://www.edufind.com/english/grammar/nouns6.php) in their own right. 

Even the Swiss news use the term [Swiss man](http://www.thelocal.ch/20130725/prince-georges-website-swiped-by-swiss-man) themselves.

> 
> Prince George's website swiped by Swiss man
> 
> 
>
Vladimir Nabokov and Shakespeare went with **Switzer**[;](https://english.stackexchange.com/questions/233792/what-is-it-called-when-something-appears-so-obvious-no-one-expects-it) one need look no further.

> 
> GERTRUDE
>      Alack, what noise is this?
> 
> 
> CLAUDIUS Where are my **Switzers**? Let them guard the door.
> 
> 
> 

*Hamlet* 4.5

*(Interestingly, the Russian word for "doorman" is швейцар ["shveĭt͡sar"], perhaps from this usage. But I'm fairly sure "Switzer" indeed means "Swiss guy" in English.)*

> 
> ...with some weird light effects anon, when the torch-bearing **Switzers**
>  are sent to find the body.
> 
> 
> 

*Bend Sinister* 112.