Kippah for a Non-Jew
I have a few Jewish friends who wear kippahs and sometimes when I'm hanging out with them I feel out of place. Even though I am not Jewish, would there be any problem with me wearing a kippah, too?
The Aish Rabbi Replies:
Well, on one hand, the Pope wears a kippah.
But on the other hand, a non-Jew should not wear a kippah, since that might deceive others into thinking that he is Jewish.
In practice, non-Jews will sometimes wear a kippah while attending a Jewish religious function (many world leaders have been photographed at the Western Wall wearing a kippah), but in general a non-Jew should not wear one, due to the confusion it may cause.
However, since the idea of a kippah is to have the head covered as a reminder of God, you could certainly use some other head covering, like a cap, to serve that purpose.