No. I do not believe in God. There is no evidence. This is just a notion. The concept of 'God' arises from the notion that there must be a creator of the universe. Creation of what? soul or nature. According to Hindu religion itself, nature and should always existed and were never created. This demolishes the very basis of 'notion of God'.
Yes, I believe in God. Believing or not believing is a very much subjective matter, but if only one considers the way this universe runs in synchronization, in harmony, in disaster and simultaneous creation, our own existence, where from we come to where we go, then we would realize that there is a greater power somewhere that governs over it all and makes sure that things doesn't go astray. You can name that power God or something else or just quarrel about it, but that won't change a thing, neither the Sun rising from the east nor our own individual troubles.