1. The first Homosapienses
2. Muhammed
3. Jesus
4. Paul
5. Newton
6. Hitler
7. Stalin
8. Mao
9. Djengis Khan
10. Buddha
11. Aristotle
12. Roosevelt
13. Churchill
14. Einstein
15. Gavrilo Princip

Other opinions?

1) Discoverer of fire
2) Discoverer of soap
3) Discoverer of metallurgy
4) Saul of Tarsus
5) Augustus Caesar
6) Muhammad
7) Christopher Columbus
8) Johannes Gutenberg
9) Louis Pasteur
10) James Watt

You seem to rate military achievements somewhat higher than I.

Roosevelt over Churchill? I don't think either should get in there but come on.

One guy who does not get his due and probably should be in the top twenty is Charles Steinmetz.

Nice touch with Princip, OP. Here are a few others I thought of;

John Adams
Mohandas Gandhi
Constantine
Pericles

Those things were probably done multiple times in multiple places...

How come Tesla is not on that list......

Jesus and Paul come above Mohammed.

In a very rough timeline order, I'd say...

Moses
Aristotle
Buddha
Augustus
Jesus
Paul
Constantine
Muhammed
Thomas Aquinas
Copernicus
Martin Luther
Columbus
Henry VIII
Elizabeth 1
George Washington
Gutenberg
Descartes
Newton
Napoleon
Adam Smith? (not sure about this - might be confusing influence with expression of what would have happened anyway)
Faraday
Lister
Darwin
Lincoln
Babbage
Marx
Einstein
Lenin
Hitler
Stalin
Churchill
Turing
JFK
Thatcher
Gorbechov
Berners-Lee

And I think Mandela will continue to be an influence or a moral/spiritual kind, long after his death

Tom Paine might be a good shout no?

George Marshall over both of them.

Yeah, you're right. Probably just answering the wrong question with those three.

I can't see including leaders from WWII, outside of Hitler & Stalin, on any list of most influential people in history.

Roosevelt & Churchill didn't appreciably change the world. They were caught up in the actions of those who did, and were prominent individuals at the time. But Hitler (and to a lesser extent Stalin, although more for his events around the war than in it) drove those events, which had a noticeable and lasting effect on the world.

George Kennan as well.

I'm not particularly fond of lists but do admit that they are fun, even if of limited use. But that aside, to leave Confucius/Mencius off any list is a grave error; more likely due to myopia than any intentional disregard - So too for Lao Tzu (possibly a somewhat mythical person). Emperor Mao could be also added; Peter the Great; And Euclid; Pythagoras also, if Russell is to be believed. Pythagoras introduced mysticism and the orphic (which became metaphysics) into western philosophy and bent its spine (it was much more rationalistic pervious). It has been crooked ever since with immense repercussions to western intellectual thought.

-Zeno

Newton
Einstein
Galileo
Darwin
Mohammed
Jesus
Gutenburg
Constantine
Leo Tzu
Buddha
Confucious
Aristotle
Locke
Descartes
Paine
Augustus Ceasar
Williiam the Conqueror
Queen Elizabeth I

I find it interesting which groups are found at the top of our list. Scientists, Religious leaders, Philosophers, and Politicians. Is there one class, above the others which deserves top billing?

I'd vote science. No matter what the world has become to date, as a result of these influences, their impact will wane over time. Science will continue to have profound impact forever. These fundamental discoveries are the foundation of current empires and future worlds, no matter how they ultimately manifest.

Any comment on the fact there's only one female on the list, and what conditions made her exceptional?