The 1928 Chatham Cup was the sixth annual nationwide knockout football competition in New Zealand. The competition was run on a regional basis, with six regional associations and the affiliated sub-associations of the larger regions competing. Auckland, Wellington, Manawatu, Hawkes Bay, Canterbury, and Otago each holding separate qualifying rounds. The Hawkes Bay and Otago regions had only a single team entered each, Hastings United and Northern AFC. Hastings United's first match was the Manawatu/Hawkes Bay Final against St. Andrew's. Northern AFC automatically advanced to the South Island final, meeting the winner of the Canterbury finals, Christchurch Thistle. The South Auckland F.A., a sub-association of the Auckland Football Association, entered teams from the towns of Huntly and Pukem