How Pizza Spread Around the World

c. 1880-1924

Southern Italian emigration carries pizza to the United States

Naples, Campania and the Mezzogiorno, Italy → New York City, United States

The single largest transmission event in pizza's history: roughly four million Italians, overwhelmingly from the south and disproportionately from Campania, emigrated to the United States between 1880 and 1924, bringing a Neapolitan street-food tradition into cities where almost every input — flour, cheese, tomatoes, fuel, and the buying public — was different.

c. 1880-1950s

Italian emigration to Argentina produces a cheese-forward parallel tradition

Campania, Liguria and the Mezzogiorno, Italy → Buenos Aires, Argentina

Argentina received proportionally more Italian immigrants than any other country, and Buenos Aires developed a pizza tradition that diverged from both Naples and the United States — thicker, far more heavily cheesed, and embedded in a distinct sit-down pizzería-and-fainá culture.

c. 1880s-1930s, with pizzerias proliferating from the 1950s

Italian emigration to São Paulo builds a topping-led restaurant tradition

Campania, Veneto and Calabria, Italy → São Paulo, Brazil

São Paulo received the largest Italian settlement in Brazil, concentrated in the Brás and Bixiga districts, and developed a pizza culture organised around the sit-down family restaurant, an enormous topping repertoire, and a specific weekly occasion rather than around street food.

c. 1880-1950s

River Plate transmission between Argentina and Uruguay

Liguria and Campania, Italy → Montevideo, Uruguay

Montevideo and Buenos Aires developed closely related pizza cultures through shared Italian immigration and continuous movement across the River Plate — a case where two national traditions are better described as one regional tradition with local emphases.

c. 1890-1950s

Sicilian emigration and the American square pie

Palermo, Sicily, Italy → New York City, United States

Sicilian sfincione — a thick, spongy, tray-baked bread topped with onion, anchovy, breadcrumb and a hard grating cheese — travelled with Sicilian emigrants and became, in the United States, something quite different: the mozzarella-topped 'Sicilian slice' and, later, the thinner home-pan grandma pie.

1945-1970s

Post-war American presence carries pizza back into northern Europe

United States → Northern and central Europe, Germany

Pizza reached much of northern Europe not directly from Italy but via the United States — through American servicemen stationed in Europe after 1945, American commercial chains, and returning Italian labour migrants — which is why several northern European pizza cultures resemble American pizza more than Neapolitan pizza.

1950s-1960s

Italian migration to Ontario, and the pizza Canada gave the world

Southern Italy, Italy → Windsor, Ontario, Canada

Post-war Italian migration to southern Ontario produced a distinct Canadian pizza tradition — Windsor's shredded-pepperoni-and-canned-mushroom style among others — and, in Chatham in 1962, the single most internationally argued-about pizza ever created.

1945-present, in three distinct phases

Italian migration, then chains, then a Neapolitan revival in the United Kingdom

Italy → London, United Kingdom

Britain's pizza culture arrived in three distinct, non-continuous phases — post-war Italian migration into catering, an American-led chain and delivery boom from the 1960s, and a Neapolitan-facing artisan revival from the mid-2000s — and the third phase is closer to Naples than the first two ever were.

1950s-1970s

Internal Italian migration carries Neapolitan pizza north

Naples, Campania and the Mezzogiorno, Italy → Milan, Lombardy, Piedmont and northern Italy, Italy

Pizza was not a national Italian dish until southern Italians carried it north during the post-war internal migration to Milan, Turin and the industrial north — an internal movement that made pizza Italian rather than Neapolitan, and one routinely omitted from accounts that jump straight from Naples to New York.

c. 1950s-1970s

Greek immigrants build a separate American pizza tradition

Greece → New England, United States

A substantial share of New England's pizza trade was built not by Italians but by Greek immigrants, who produced a distinct pan-baked, oil-rich, oregano-forward style — a reminder that pizza's American diffusion was not carried by one diaspora alone.

1950s-1970s, with chain expansion from the 1980s

Post-war Italian migration to Australia, then a chain-led mass market

Calabria, Sicily and the Veneto, Italy → Melbourne and Sydney, Australia

Australia's pizza culture began with substantial post-war Italian and Greek migration into the catering trade, was then overtaken by American chains in the 1980s, and has since developed both a strong wood-fired artisan scene and a set of frankly local toppings that no other country shares.

1950s-1990s

Chain expansion, not migration, brings pizza to Japan

United States → Tokyo, Japan

Japan has no significant Italian diaspora, and its pizza culture arrived almost entirely through American occupation-era contact and then commercial chain expansion from the 1970s — which is why Japanese pizza developed as a delivery-and-topping culture first and acquired a Neapolitan artisan scene only much later.

1960s-1990s

Frozen pizza carries pizza into homes that never had a pizzeria

United States → Western Europe, Multiple

In much of Europe, frozen supermarket pizza reached households years before a local pizzeria did, making the freezer aisle rather than the restaurant the point of first contact — and setting the reference expectation for what pizza tastes like for a large part of a generation.

1985 onward

Chain expansion, then domestic reinvention, in South Korea

United States → Seoul, South Korea

South Korea received pizza through American chains in the mid-1980s, then produced domestic chains that reinvented the product far beyond the imported version — filled and topped rims, sweet-potato mousse, bulgogi — and now export that reinvention onward to other Asian markets.

1970s-2000s

American chain expansion as the dominant global transmission route

United States → Multiple

For most of the world's population, pizza arrived as an American franchise product in the 1980s and 1990s rather than as an Italian dish carried by migrants — which makes chain expansion, not emigration, the single largest transmission mechanism in pizza's global history.

1984-present

AVPN certification exports Neapolitan practice without exporting Neapolitans

Naples, Italy → Multiple

Since the 1990s the fastest-growing route for Neapolitan pizza has been formal training and certification rather than migration: AVPN-affiliated pizzerias now operate on every inhabited continent, staffed overwhelmingly by locally-born pizzaioli trained to the disciplinare.

1996 onward

Chain expansion and deep localisation in India

United States → New Delhi and Mumbai, India

Pizza entered India through chain franchising in the mid-1990s and was localised further and faster than almost anywhere else — driven by widespread vegetarianism, religious restrictions on beef and pork, an established spice repertoire, and the near-total absence of an Italian diaspora to anchor a reference version.