El Guettar may refer to:

• El Guettar, Algeria, a town in Relizane Province, Algeria
• El Guettar, Tunisia, a town in Gafsa Governorate, Tunisia
  • Battle of El Guettar, engagement in World War II fought near the Tunisian town

• Corticiasca (Ticino)
• Corticium alneum
• Corticium arachnoideum
• Corticium avellaneum
• Corticium bisporum
• Corticium bresadolae
• Corticium centrifugum
• Corticium cinereum
• Corticium cornigerum
• Corticium corrugatum
• Corticium galactinum
• Corticium invisum
• Corticium javanicum
• Corticium koleroga
• Corticium lacteum
• Corticium letendrei
• Corticium murinum
• Corticium nyssae
• Corticium obscurum
• Corticium pauperculum
• Corticium penicillatum
• Corticium pervagum
• Corticium radicatum
• Corticium rolfsii
• Corticium rosellum