Italy has a well developed transport infrastructure. The Italian rail network is extensive (), especially in the north, and it includes a high-speed rail network that joins the major cities of Italy from Naples through northern cities such as Milan and Turin. The Florence–Rome high-speed railway was the first high-speed line opened in Europe when more than half of it opened in 1977. Italy has 2,507 people and 12.46 km2 per kilometer of rail track, giving Italy the world's thirteenth largest rail network.Compare List of countries by rail transport network size. The Italian rail network is operated by state-owned Ferrovie dello Stato, while the rail tracks and infrastructure are managed by Rete Ferroviaria Italiana.

Italy's paved road network is also widespread, with a total length of about .CIA World Factbook 2005 It comprises both an extensive motorway network (), mostly toll roads, and national and local roads. Italy was the first country in the world to build motorways, the so-called autostrade, reserved for fast traffic and for motor vehicles only. The Autostrada dei Laghi ("Lakes Motorway"), the first built in the world, connecting Milan to Lake Como and Lake Maggiore, and now parts of the A8 and A9 motorways, was devised by Piero Puricelli and was inaugurated in 1924. The Strade Statali is the Italian national network of state highways. The total length for this network is about . The routes of some state highways derive from ancient Roman roads, such as the Strada statale 7 Via Appia, which broadly follows the route of the Roman road of the same name.

Italy is the fifth in Europe by number of passengers by air transport, with about 148 million passengers or about 10% of the European total in 2011. In 2012 there were 130 airports in Italy, including the two hubs of Malpensa International Airport in Milan and Leonardo da Vinci International Airport in Rome. Since October 2021, Italy's flag carrier airline is ITA Airways, which took over the brand, the IATA ticketing code, and many assets belonging to the former flag carrier Alitalia, after its bankruptcy. The country also has regional airlines (such as Air Dolomiti), low-cost carriers, and Charter and leisure carriers (including Neos, Blue Panorama Airlines and Poste Air Cargo). Major Italian cargo operators are ITA Airways Cargo and Cargolux Italia.

Because of its long seacoast, Italy also has many harbors for the transportation of both goods and passengers. In 2004 there were 43 major seaports including the Port of Genoa, the country's largest and the third busiest by cargo tonnage in the Mediterranean Sea. Due to the increasing importance of the maritime Silk Road with its connections to Asia and East Africa, the Italian ports for Central and Eastern Europe have become important in recent years. In addition, the trade in goods is shifting from the European northern ports to the ports of the Mediterranean Sea due to the considerable time savings and environmental protection. In particular, the deep water port of Trieste in the northernmost part of the Mediterranean Sea is the target of Italian, Asian and European investments.Marcus Hernig: Die Renaissance der Seidenstraße (2018) pp 112.Bernhard Simon: Can The New Silk Road Compete With The Maritime Silk Road? in The Maritime Executive, 1 January 2020. Transport networks in Italy are integrated into the Trans-European Transport Networks.

Railways

The Italian rail network is extensive, especially in the north, and it includes a high-speed rail network that joins the major cities of Italy from Naples through northern cities such as Milan and Turin. Italy has 2,507 people and 12.46 km2 per kilometer of rail track, giving Italy the world's 13th largest rail network. Italy has 11 rail border crossings over the Alpine mountains with its neighbouring countries.

Higher-speed trains are divided into three categories: Frecciarossa () trains operate at a maximum speed of on dedicated high-speed tracks; Frecciargento () trains operate at a maximum speed of on both high-speed and mainline tracks; and Frecciabianca () trains operate on high-speed regional lines at a maximum speed of .

The Italian railway system has a length of , of which standard gauge and electrified. The active lines are . The network is recently growing with the construction of the new high-speed rail network. The narrow gauge tracks are: of gauge (all electrified); of gauge (of which electrified).

A major part of the Italian rail network is managed and operated by Ferrovie dello Stato Italiane, a state owned company. Other regional agencies, mostly owned by public entities such as regional governments, operate on the Italian network. The rail tracks and infrastructure are managed by Rete Ferroviaria Italiana. The Italian railways are subsidised by the government, receiving €8.1 billion in 2009.

Travellers who often make use of the railway during their stay in Italy might use Rail Passes, such as the European Inter-Rail or Italy's national and regional passes. These rail passes allow travellers the freedom to use regional trains during the validity period, but all high-speed and intercity trains require a 10-euro reservation fee. Regional passes, such as "Io viaggio ovunque Lombardia", offer one-day, multiple-day and monthly period of validity. There are also saver passes for adults, who travel as a group, with savings up to 20%. Foreign travellers should purchase these passes in advance, so that the passes could be delivered by post prior to the trip. When using the rail passes, the date of travel needs to be filled in before boarding the trains.

High speed trains

The Italian high-speed service began in 1938 with an electric-multiple-unit ETR 200, designed for , between Bologna and Naples. It too reached in commercial service, and achieved a world mean speed record of between Florence and Milan in 1938.

Major works to increase the commercial speed of the trains already started in 1967: the Rome-Florence "super-direct" line was built for trains up to , and reduced the journey time to less than two hours. The Florence–Rome high-speed railway was the first high-speed line opened in Europe when more than half of it opened in 1977.

In 2009 a new high-speed line linking Milan and Turin, operating at , opened to passenger traffic, reducing the journey time from two hours to one hour. In the same year, the Milan-Bologna line was open, reducing the journey time to 55 minutes. Also the Bologna-Florence high-speed line was upgraded to for a journey time of 35 minutes.

Since then, it is possible to travel from Turin to Salerno (ca. ) in less than five hours. More than 100 trains per day are operated.

The main public operator of high-speed trains (alta velocità AV, formerly Eurostar Italia) is Trenitalia, part of FSI. Trains are divided into three categories (called "Le Frecce"): Frecciarossa ("Red arrow") trains operate at a maximum of on dedicated high-speed tracks; Frecciargento (Silver arrow) trains operate at a maximum of on both high-speed and mainline tracks; Frecciabianca (White arrow) trains operate at a maximum of on mainline tracks only.

Since 2012, a new and Italy's first private train operator, NTV (branded as Italo), run high-speed services in competition with Trenitalia. Even nowadays, Italy is the only country in Europe with a private high-speed train operator.

Construction of the Milan-Venice high-speed line has begun in 2013 and in 2016 the Milan-Treviglio section has been opened to passenger traffic; the Milan-Genoa high-speed line (Terzo Valico dei Giovi) is also under construction.

Today it is possible to travel from Rome to Milan in less than three hours (2h 55') with the Frecciarossa 1000, the new high-speed train. To cover this route, there's a train every 30 minutes.

Night trains

The Nightjet of the Austrian Federal Railways (ÖBB) serves different big cities in Italy like Rome, Venice, Florence and Milano. The trains can be used for rides inside Italy as well as for journeys abroad.

Nightjet trains offers beds in sleeper carriages (Nightjet's most comfortable service category), couchette carriages, and seated carriages. On certain connections, cars can also be transported on the train. Bikes can be transported in a bike transport bag, or on some connections also in special bike racks.

Intercity trains

With the introduction of high-speed trains, intercity trains are limited to few services per day on mainline and regional tracks.

The daytime services (InterCity IC), while not frequent and limited to one or two trains per route, are essential in providing access to cities and towns off the railway's mainline network. The main routes are Trieste to Rome (stopping at Venice, Bologna, Prato, Florence and Arezzo), Milan to Rome (stopping at Genoa, La Spezia, Pisa and Livorno (stopping at Parma, Modena, Bologna, Prato, Florence and Arezzo), Bologna to Lecce (stopping at Rimini, Ancona, Pescara, Bari and Brindisi) and Rome to Reggio di Calabria (stopping at Latina and Naples). In addition, the Intercity trains provide a more economical means of long-distance rail travel within Italy.

The night trains (Intercity Notte ICN) have sleeper compartments and washrooms, but no showers on board. Main routes are Rome to Bolzano/Bozen (calling at Florence, Bologna, Verona, Rovereto and Trento), Milan to Lecce (calling at Piacenza, Parma, Reggio Emilia, Modena, Bologna, Faenza, Forlì, Cesena, Rimini, Ancona, Pescara, Bari and Brindisi), Turin to Lecce (calling at Alessandria, Voghera, Piacenza, Parma, Bologna, Rimini, Pescara, Termoli, San Severo,Foggia, Barletta, Bisceglie, Molfetta, Bari, Monopoli, Fasano, Ostuni and Brindisi) and Reggio di Calabria to Turin (calling at Naples, Rome, Livorno, La Spezia and Genova). Most portions of these ICN services run during the night; since most services take 10 to 15 hours to complete a one-way journey, their day-time portion provide extra train connections to complement with the Intercity services.

There are a total of 86 intercity trains running within Italy per day.

Regional trains

Trenitalia operates regional services (both fast veloce RGV and stopping REG) throughout Italy.

Regional train agencies exist: their train schedules are largely connected to and shown on Trenitalia, and tickets for such train services can be purchased through Trenitalia's national network. Other regional agencies have separate ticket systems which are not mutually exchangeable with that of Trenitalia. These "regional" tickets could be purchased at local newsagents or tobacco stores instead.

Trentino-Alto Adige / Trentino-Südtirol: Südtirol Bahn (South Tyrol Railway) runs regional services on Ala/Ahl-am-Etsch to Bolzano/Bozen (calling at Rovereto/Rofreit, Trento/Trient and Mezzocorona/Kronmetz), Bolzano/Bozen to Merano/Meran, Bressanone/Brixen to San Candido/Innichen, and a direct "Tirol regional express REX" service between Bolzano/Bozen in Italy and Innsbruck in Austria. Veneto: Sistemi Territoriali runs regional trains in Veneto region. Lombardy: Trenord runs the Malpensa Express airport train, many Milan's suburban lines and most regional train services in Lombardy. Trenord also co-operates with DB and ÖBB on the EuroCity Verona-Munich service, and with SBB CFF FFS (joint-venture TiLo) on the regional Milan-Bellinzona service. Emilia-Romagna: Trasporto Passeggeri Emilia-Romagna provides vital connections across cities on different mainline networks, including Modena, Parma, Suzzara, Ferrara, Reggio Emilia and Bologna. Tuscany: La Ferroviaria Italiana operates in Arezzo province. Abruzzo: Sangritana runs daily services between Pescara and Lanciano.

In addition to these agencies, there's a great deal of other little operators, such as AMT Genova for the Genova-Casella railway.

Rail links with adjacent countries