An organic light emitting display apparatus includes a first substrate, a second substrate, an organic light emitting device, a thin film transistor, a wiring pattern and a seal. The first substrate includes a first region, a second region and a third region. The third region surrounds the first region. The second region is between the first region and the third region, and is partially overlapped with the third region. The second substrate faces the first substrate. The organic light emitting device is disposed on the first substrate in the first region. The thin film transistor is disposed on the first substrate in a region where the second region and the third region overlap. The wiring pattern is disposed on the first substrate in the second region. The seal is disposed in the third region, between the first substrate and the second substrate in the third region.