The incident happened on Market Street shortly after 4pm.
Drivers were advised to take an alternative route to avoid the accident between Union Street and Guild Street.
A police spokesman said: “We were called at 4.25pm to an accident involving a pedestrian and a bus.
“The road doesn’t look to be closed and there doesn’t seem to be any serious injuries.”
Aberdeen City Council tweeted: “Police are in attendance on a road traffic accident on Market Street on the stretch between Union Street and Guild Street. Drivers are advised to use an alternative route for the time being.”
Aberdeen pedestrian hit by bus on city centre road