One example is Albert Einstein. He didn't believe in a personal god who's concerned with human actions and behaviors. But he did accept some of the teachings of Spinoza. Which is that what religions call God, is an impersonal "essence" that underlies everything we observe about the world and everything it contains. Spinoza called it the substance of the universe. In the sense that it stands below everything we see, know, and experience.
Another is Peter Higgs. The British Nobel Prize willing physicist, who died this April at age 94. He postulated what is now known as the Higgs boson. Which, in concert with the Higgs field, gives mass to all the atoms which make up stars, planets, people, and everything in the universe. Incidentally, the Higgs boson is nicknamed the "God particle." Which Higgs--an atheist--didn't like at all.. But he knew it was kind of a joke.