An engine having a variable valve timing device and a variable tumble device, may include the variable valve timing device advancing or delaying a rotation of an intake camshaft or an exhaust camshaft, an intake valve or an exhaust valve configured to be operated by the intake camshaft or the exhaust camshaft respectively to open and close an intake port or an exhaust port, and the variable tumble device that may be disposed on an upstream side of the intake valve in the intake port and changes a flow of a gas being suck to form a tumble in a combustion chamber.