Tiet : 1: Vietnamese (Tiết): from the Chinese surname 薛 see Xue.2: In some cases possibly also Dutch or North German: from a pet form of the personal name Diederik (see Dederick) or Dietrich. The surname Tiet is rare in the Netherlands and very rare in Germany.
Source : DAFN2 : Dictionary of American Family Names 2nd edition, ©2022 by Patrick Hanks and Oxford University Press
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