Ronald Gray, from Cranhill, is starring in We Love Parcels.
In the advert, to be screened during tomorrow night's ITV show, Ronald can be seen delivering a package to a café.
The campaign has been launched at the start of Royal Mail's build-up to Christmas.
The company is to opens 10 temporary parcel sort centres on Monday. Ronald, 27, a mail collection delivery driver, was chosen from 2500 staff to star in the advert. He said: "It was such a great experience and I can't wait to see myself on TV."
The advert is accompanied by a song by the official Royal Mail choir and was recorded at Abbey Road Studios.