It is an Islamic religious requirement that a non-Muslim boy can not marry a Muslim woman. This law dates from an earlier time when menfolk regarded women as little more than property, so it is arguable whether this rule should still apply.
By law in most countries, a non-Muslim man can certainly marry a Muslim woman if they wish, and such marriages do take place. In India, the Special Marriages Act makes special allowance for this requirement, while the law in most Western countries is unconcerned with the religion of the marriage participants. I have also found online references to one imam in England and another in South Africa, who will officiate at the marriage of a Muslim woman to a non-Muslim man if they wish to be married in the Islamic faith.