The 1948 Chatham Cup was the 21st annual nationwide knockout football competition in New Zealand.
Teams taking part in the final rounds are known to have included Eastern Suburbs (Auckland), Waterside (Wellington), Technical Old Boys (Christchurch), and Roslyn-Wakari (Dunedin).
The final was a re-match of the previous years' final, with Technical Old Boys gaining revenge over Waterside for their loss of the previous year.
Though the Wharfies held the Canterbury side to a 0-0 half-time score, they succumbed in the second half to goals by Peter O'Malley and Cyril Thomas.
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