A window drive apparatus includes an electric motor and a gear train. The gear train includes a first deceleration mechanism and a second deceleration mechanism. The first deceleration mechanism includes a worm driven by the electric motor and a worm gear meshed with the worm. The second deceleration mechanism includes a first driving gear and a second driving gear coaxially fixed and respectively located at opposite sides of the worm gear, a first driven gear meshed with the first driving gear and a second driven gear meshed with the second driving gear. The first driven gear and the second driven gear are coaxially fixed together. A vehicle door including the window drive apparatus is also provided.