The name Sem is a boy's name of Hebrew, Dutch origin meaning "name". Sem and is often added to lists like Boy Names Uncommon in the US and discussed in our forums with posts like "What would you name a sibling to...?".
From the experts:
Popular name in the Netherlands that's arguably more attractive than the original Shem, who was one of the biblical sons of Noah. A Sam alternative, though you'll forever be explaining it.