Secu may refer to:

Places in Romania
  • Secu, a commune in Dolj County
  • Secu, a village in Reșița, Caraș-Severin County
  • Secu, a village in Toplița, Harghita County
  • Secu, a village in Bicaz, Neamț County
  • Secu, a tributary of the Bârzava in Caraș-Severin County
  • Pârâul Sec, a tributary of the Neagra Broștenilor in Harghita County
  • Secu, a tributary of the Popeni in Bacău County
  • Secu, a tributary of the Bistrița in Neamț County
  • Secu (Neamț), a tributary of the Neamț in Neamț County
  • Secu, a tributary of the Botiza in Maramureș County
  • Secu, a tributary of the Pogăniș in Caraș-Severin County
People
  • Serghei Secu, Moldovan football manager and former footballer
Other