Astrophysicist Neil deGrasse Tyson insists on being called an
agnostic because to him, atheism carries an air of certainty (which
most people ascribe to antitheism) that there definitely is no god.
He is simply not interested in the conversation about the existence
of god.
National Geographic's Sir David Attenborough says that it simply
"never occurred to me to believe in god", and also describes
himself as agnostic.
Sir Arthur Conan Doyle, author of the Sherlock Holmes and Lost
World novels, was certainly agnostic for most of his life, although
his descent into belief in fairies and other superstitions toward
the end of his life may have placed him in the believers' camp.
Aldous Huxley (aka Darwin's bulldog) is the world's first
agnostic in that he invented the word "agnostic".
Joseph Heller, author of Catch-22.
Mark Twain, creator of Tom Sawyer and Huck Finn.
Noam Chomsky, "smartest person in academia".
David Hume, Immanuel Kant, John Locke and Soren Kierkegaard are
famous philosophers and agnostic polemicists.
Confucius, who say a lot of thing.
Alexander Graham Bell, who in fact did not invent the telephone
but did invent the word "Hello" as it is spelled and used
today.
Edward Teller, the most evil and most mad scientist who has ever
lived.
Carl Sagan, inventor of the word "Billions".
Stephen Jay Gould, popular biologist, famously quoted as saying
that "science and religion are non-overlapping magisteria", i.e.
that it's not possible for one to contradict the other.
Albert Einstein
Charles Darwin
It should be noted that the title of atheist also applies to
many of the above; even well-known atheists and antitheists have
described themselves as agnostic, such as Richard Dawkins and
Bertrand Russell.
