Tagus (; Spanish: Tajo, [ˈtaxo]; Portuguese: Tejo, [ˈtɛʒu]) ita ce kogi mafi tsawo a cikin yankin Iberian. Yana da tsawon kilomita 1,007 (626 mi), 716 km (445 mi) a Spain, 47 km (29 mi) tare da iyakar tsakanin Portugal da Spain da kuma kilomita 275 (171 mi) a Portugal, inda ya zube a cikin Tekun Atlantika kusa da Lisbon. Yana kwashe yanki mai girman murabba'in kilomita 80,100 (30,927 sq mi) (na biyu mafi girma a yankin Iberian bayan Douro). Ana amfani da Tagus sosai don yawancin hanyarsa.
Tekun Atlantika