The Province of Grosseto () is a province in the region of Tuscany in central Italy. Its capital is the city of Grosseto. It has a population of 214,863 in an area of across its 28 municipalities. and the smaller Giannutri islands and Formiche di Grosseto and Formica di Burano. The Arcipelago Toscano National Park spans both the provinces of Grosseto and Livorno, and includes the seven main islands of the Tuscan Archipelago: Elba, Isola del Giglio, Capraia, Montecristo, Pianosa, Giannutri, Gorgona, and some of the minor islands and rock outcrops. The highest point in the park is Mount Capanne, at in elevation, on the island of Elba.
The Colline Metallifere (Metalliferous Hills) line the border in the south with Lazio, and contain the Natural Park of Maremma, that protects also some of the remainings of the large swamps that once covered the area. Other protected areas are the Diaccia Botrona marshland. The principal rivers are the Ombrone, Fiora, Albegna, Pecora, Bruna, Merse, , Farma and Chiarone. The coastline between the Gulf of Follonica and the mouth of the Chiarone is dominated by blue waters and pine forests, and is home to resorts such as Marina di Grosseto, Principina a Mare, Castiglione della Pescaia, Punta Ala, Puntone di Scarlino and Talamone. Lakes include Lago dell'Accesa, Lago di Burano, Lago di San Floriano and Lago Acquato. Also of note is the volcanic cone of Mount Amiata, Bandite di Scarlino (213 m), Promontorio di Punta Ala e delle Rocchette (350 m), Monti dell'Uccellina (417 m), Monte Argentario (635 m), and Promontorio di Ansedonia (113 m).
Government
List of presidents
List of presidents of the province since 2014, the year of the Delrio reform.
{|class="wikitable"
! President
! Term start
! Term end
! Party
|-
|Emilio Bonifazi
|align=center|14 October 2014
|align=center|19 July 2016
|Democratic Party
|-
|Antonfrancesco Vivarelli Colonna
|align=center|9 January 2017
|align=center|19 December 2021
|Independent (centre-right)
|-
|Francesco Limatola
|align=center|19 December 2021
|align=center|Incumbent
|Democratic Party
|-
|}
Municipalities
The province has 28 municipalities:
- Arcidosso
- Campagnatico
- Capalbio
- Castel del Piano
- Castell'Azzara
- Castiglione della Pescaia
- Cinigiano
- Civitella Paganico
- Follonica
- Gavorrano
- Grosseto
- Isola del Giglio
- Magliano in Toscana
- Manciano
- Massa Marittima
- Monte Argentario
- Monterotondo Marittimo
- Montieri
- Orbetello
- Pitigliano
- Roccalbegna
- Roccastrada
- Santa Fiora
- Scansano
- Scarlino
- Seggiano
- Semproniano
- Sorano
Frazioni
This is the complete list of the (singular: ) – towns and villages – in the province of Grosseto:
- Alberese
- Albinia
- Ansedonia
- Arcille
- Baccinello
- Bagno di Gavorrano
- Bagnoli
- Bagnolo
- Bagnore
- Batignano
- Boccheggiano
- Borgo Carige
- Borgo Santa Rita
- Braccagni
- Buriano
- Caldana
- Cana
- Capalbio Scalo
- Casale di Pari
- Casone
- Castellaccia
- Castell'Ottieri
- Castiglioncello Bandini
- Catabbio
- Cellena
- Cerreto
- Chiarone Scalo
- Civitella Marittima
- Dogana
- Elmo
- Filare
- Fonteblanda
- Frassine
- Gerfalco
- Ghirlanda
- Giannella
- Giannutri
- Giardino
- Giglio Campese
- Giglio Castello
- Giglio Porto
- Giuncarico
- Grilli
- Istia d'Ombrone
- La Torba
- Lago Boracifero
- Le Macchie
- Marina di Grosseto
- Marroneto
- Marrucheti
- Marsiliana
- Monte Antico
- Montebamboli
- Montebuono
- Montegiovi
- Montelaterone
- Montemassi
- Montemerano
- Montenero d'Orcia
- Montepescali
- Montevitozzo
- Montiano
- Monticello Amiata
- Montorgiali
- Montorio
- Montorsaio
- Murci
- Niccioleta
- Nomadelfia
- Paganico
- Pancole
- Pari
- Pereta
- Pescia Fiorentina
- Pescina
- Petricci
- Pian d'Alma
- Pian di Rocca
- Piloni
- Poderi di Montemerano
- Poggi del Sasso
- Poggio Capanne
- Poggio Murella
- Poggioferro
- Polveraia
- Pomonte
- Porrona
- Porto Ercole
- Porto Santo Stefano
- Potassa
- Prata
- Preselle
- Principina a Mare
- Principina Terra
- Punta Ala
- Puntone di Scarlino
- Ravi
- Ribolla
- Rispescia
- Roccamare
- Roccatederighi
- Rocchette
- Rocchette di Fazio
- Roselle
- Salaiola
- San Donato
- San Giovanni delle Contee
- San Lorenzo
- San Martino sul Fiora
- San Quirico
- San Valentino
- Santa Caterina
- Sasso d'Ombrone
- Sassofortino
- Saturnia
- Scarlino Scalo
- Selva
- Selvena
- Sovana
- Sticciano
- Stribugliano
- Talamone
- Tatti
- Tirli
- Torniella
- Travale
- Triana
- Vallerona
- Valpiana
- Vetulonia
- Zancona
Demographics
As of 2026, the population is 214,863, of which 48.9% are male, and 51.1% are female. Minors make up 12.5% of the population, and seniors make up 29.6%.
Immigration
As of 2025, immigrants make up 13.6% of the total population. The 5 largest foreign countries of birth are Romania, Albania, Morocco, Ukraine, and North Macedonia.