Well, to answer your question Sherry, it's John Crawford, who is obviously a male.

Sometimes a sidesaddle is easier for people with less mobility who still want to ride - I've heard it's used more and more in physical therapy, and found this article about a man who made it his own after an injury.

Also, some men show their horses sidesaddle. (At least, one would infer that from the fact that man's clothing options are included in this list of acceptable attire.)