Central Italian, or Latin-Umbrian-Marchegian and in Italian linguistics as "middle Italian dialects", is mainly spoken in the regions of: Lazio (which includes Rome); Umbria; central Marche; a small part of Abruzzo and Tuscany.

Romanesco, spoken in the Metropolitan City of Rome, Lazio.
As mentioned above, it is the basis of the accent of the received pronunciation in standard Italian.

Castelli Romani: spoken in the Castelli Romani, communes in the Metropolitan City of Rome, Lazio.

Tuscia or Viterbo: spoken in the Province of Viterbo, Lazio.

Ciociaro: spoken in Ciociaria, in the Province of Frosinone, Lazio.

Umbrian: spoken in Umbria.

Central Marchigiano: spoken in central Marche.

Sabino: spoken in the city of L'Aquila (Abruzzo) and the Province of Rieti (Lazio).
Central Italian, or Latin-Umbrian-Marchegian and in Italian linguistics as "middle Italian dialects", is mainly spoken in the regions of: Lazio (which includes Rome); Umbria; central Marche; a small part of Abruzzo and Tuscany.
Romanesco, spoken in the Metropolitan City of Rome, Lazio. As mentioned above, it is the basis of the accent of the received pronunciation in standard Italian.
Castelli Romani: spoken in the Castelli Romani, communes in the Metropolitan City of Rome, Lazio.
Tuscia or Viterbo: spoken in the Province of Viterbo, Lazio.
Ciociaro: spoken in Ciociaria, in the Province of Frosinone, Lazio.
Umbrian: spoken in Umbria.
Central Marchigiano: spoken in central Marche.
Sabino: spoken in the city of L'Aquila (Abruzzo) and the Province of Rieti (Lazio).
Italo-Dalmatian languages