To, Tô, and Tō are a group of surnames of East Asian origin, for each of which "To" (without any diacritical mark) is at least an occasional variant. Tô is a Vietnamese surname (Chữ Nôm: 蘇) derived from the Chinese surname Su. From Chinese 陶 (Tao):
What nationality is the name too from?
Yoo or You, or sometimes Ryu or Ryoo is the English transcription of several Korean surnames written as 유 or 류 in hangul. As of 2000, roughly a million people are surnamed Yoo in South Korea, making up approximately 2% of the population.
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