Ithel is an ancient Welsh name, derived from the early Welsh personal name Eiddil, which means "frequent traveler" or "well-traveled". It was used in Wales during the Middle Ages and has since become quite rare. The name has been associated with a few historical figures, such as Ithel ap Rhys, a Welsh prince who ruled over Dyfed in the 10th century. Today, Ithel is considered an unusual but unique choice for a given name.
Ithel is quite rare as baby names go, with only five recorded births of this name in total since 1925.