Answer:
No, Karl Marx is generally considered the father of communism, although he was certainly not the first one to think about it. "Communism" existed in primitive forms in ancient tribal societies where everyone in the tribe simply worked common land or hunted to produce food for the entire tribe.
Marx was the first person to propose a theory that communism is an inevitable result of the natural forces and conflicts caused by a modern industrialized capitalist society and how communism would work as a society. For his work developing the theory of communism, but not for inventing it, Marx is considered the father of communism. Lenin merely implemented some but not all of Marx's theories.