Tiu or TIU may refer to:
Tiu People Tiu (pharaoh) (4th millennium BC), predynastic Pharaoh of Lower Egypt Chris Tiu (born 1985), Filipino professional basketballer
Places Týr, as the Old English name for the Sky-God of Norse (Germanic) Mythology Ţiu, a village in Cernăteşti Commune, Dolj County, Romania
Surnames A variant of the Chinese family name Teoh The Filipino version of the Chinese surname Zhang
TIU Richard Pearse Airport (IATA code: TIU), Timaru, New Zealand Tennis Integrity Unit, match fixing investigative organisation (2008–2020) Techno India University, Kolkata, West Bengal The Inspired Unemployed, Australian satirical comedy duo formed in 2019 Tishk International University, Erbil-Kurdistan, Iraq Tokyo International University, Toshima, Japan Trinity International University, Bannockburn, Illinois Tsukuba International University, Tsuchiura, Japan