Most influential people of the 20th century

Nelson Mandela▲ Rising

Twenty-seven years in prison could have made him bitter; instead Mandela walked out in 1990 and negotiated South Africa out of apartheid without the bloodbath everyone predicted, then became president of the country that had jailed him. His insistence on reconciliation over revenge turned him into the century's clearest proof that forgiveness can be a more radical political act than retribution.</br>

Era: Civil rights

added by IJRin 8 rankingsNelson Mandela

Albert Einstein▲ Rising

In 1905, a Swiss patent clerk moonlighting as a physicist rewrote the rules of space, time, and energy with E=mc², then finished the job with general relativity a decade later, bending light itself to prove him right. He became the face of genius, the moral voice warning Roosevelt about the atomic bomb he helped make possible, and the patron saint of every era's smartest kid — there's no 20th century science story that doesn't run through him.</br>

Era: Science

added by IJRin 4 rankingsAlbert Einstein

Winston Churchill▲ Rising

In the summer of 1940, with France fallen and Hitler's bombers overhead, one aging, cigar-chomping politician talked a nation into believing it could survive alone — 'we shall fight on the beaches' wasn't just rhetoric, it was the difference between capitulation and resistance. His stubbornness kept Britain in the war long enough for the Soviets and Americans to turn the tide, making him the indispensable voice against fascism when the outcome was still very much in doubt.</br>

Era: Politics

added by IJRin 7 rankings

Martin Luther King Jr.▲ Rising

From a Montgomery bus boycott to the steps of the Lincoln Memorial in 1963, King turned Christian nonviolence into the engine that dismantled legal segregation in America, marching straight into fire hoses and police dogs to force a nation to look at itself. Assassinated at 39, he left behind the Civil Rights and Voting Rights Acts and a template for moral protest that's been borrowed by movements worldwide ever since.</br>

Era: Civil rights

added by IJRin 2 rankingsMartin Luther King Jr.

Mahatma Gandhi▲ Rising

A lawyer in a homespun loincloth walked 240 miles to the sea in 1930 to illegally make salt, and in doing so showed the British Empire — and the world — that an unarmed population could out-stubborn a colonial superpower through sheer disciplined refusal. His satyagraha didn't just win India's independence in 1947; it became the operating manual for nonviolent resistance that King, Mandela, and countless others would later run.</br>

Era: Independence

added by IJRin 5 rankingsMahatma Gandhi

Marie Curie

Twice a Nobel laureate in two different sciences — physics and chemistry — Curie discovered radium and polonium by literally boiling down tons of pitchblende in a shed, opening the door to nuclear physics and cancer radiotherapy alike. As the first woman to break into the highest ranks of science, she didn't just change what we knew about the atom; she blew open who was allowed to do the knowing.</br>

Era: Science

added by IJRin 5 rankingsMarie Curie

Franklin D. Roosevelt

Elected amid the wreckage of the Great Depression, FDR reinvented the relationship between American citizens and their government with the New Deal, then became the arsenal of democracy's commander-in-chief, steering the Allies through World War II from a wheelchair he hid from the public. Four terms, Social Security, and the defeat of the Axis powers make the case that no single leader shaped the modern American state — or the postwar world order — more than he did.</br>

Era: Politics

added by IJRin 16 rankings

Henry Ford

When Ford rolled out the moving assembly line in 1913, he didn't just build cars faster — he invented modern mass production and, by paying workers $5 a day, effectively invented the consumer middle class that could afford to buy what it made. Cheap, universal automobiles reshaped cities, suburbs, and daily life across the globe, even as his uglier legacies of antisemitism and labor suppression complicate the hero narrative.</br>

Era: Industry

added by IJR

Alan Turing▼ Falling

At Bletchley Park, Turing built the machines that cracked Nazi Germany's Enigma code, shortening the war by an estimated two years and saving countless lives — then went on to sketch the theoretical blueprint for every computer that would follow. Persecuted and chemically castrated by the same government he'd helped save, his tragic end only sharpens the argument for his place here: he's the uncredited architect of the digital age.</br>

Era: Computing

added by IJRin 5 rankingsAlan Turing

The Beatles▼ Falling

Four kids from Liverpool landed on The Ed Sullivan Show in 1964 and detonated Beatlemania, then spent the rest of the decade dragging pop music from mop-top singles into psychedelic studio art with albums like Sgt. Pepper's. They didn't just sell more records than anyone — they rewired what youth culture, celebrity, and a three-minute song could be, and pop music has never escaped their shadow.</br>

Era: Culture

added by IJRin 6 rankings