The Comunidade Intermunicipal do Médio Tejo (Portuguese pronunciation: [ˈmɛdju ˈtɛʒu]; English: Middle Tagus) is an administrative division in Portugal. It was created in December 2008, replacing the former Comunidade Urbana do Médio Tejo created in 2004. It takes its name from the river Tagus. Médio Tejo is also a NUTS3 subregion of Centro Region. Since January 2015, the NUTS 3 subregion covers the same area as the intermunicipal community. The seat of the intermunicipal community is Tomar. Médio Tejo comprises parts of the former districts of Santarém and Castelo Branco. The population in 2011 was 247,331, in an area of 3,344.31 km².
The CIM Médio Tejo is composed of 13 municipalities: