The WCT Challenge Cup was a men's tennis tournament played from 1976-1980. The tournament was played in Honolulu, Hawaii in 1976, Las Vegas, Nevada in 1977, Montego Bay, Jamaica in 1978, and Montreal, Canada from 1979-1980. The tournament featured a field of four players.
| Location | Year | Champion | Runner-up | Score |
|---|---|---|---|---|
| Honolulu | 1976 | Ilie Năstase | Arthur Ashe | 6–3, 1–6, 6–7, 6–3, 6–1 |
| Las Vegas | 1977 | Jimmy Connors | Roscoe Tanner | 6–2, 5–6, 3–6, 6–2, 6–5 |
| Montego Bay | 1978 | Ilie Năstase | Peter Fleming | 2–6, 5–6, 6–2, 6–4, 6–4 |
| Montreal | 1979 | Björn Borg | Jimmy Connors | 6–4, 6–2, 2–6, 6–4 |
| 1980 | John McEnroe | Vijay Amritraj | 6–1, 6–2, 6–1 |