| NSW Federation Cup | |
| Year: | 1966 |
| Country: | (NSW) |
| Num Teams: | 16 |
| Defending Champions: | Hakoah |
| Winners: | APIA Leichhardt |
| Second: | St. George-Budapest |
| Matches: | 16 |
| Prev Season: | 1965 |
The 1966 NSW Federation Cup (Henry Seamonds Trophy) was the tenth and final edition of the NSW Soccer Federation's premier soccer cup. The cup was open to all ten clubs in the first and six second division clubs.[1]
Sydney Hakoah were the defending champions, but were eliminated by St. George Budapest in the semi-finals when they lost 1–2.
The final was played on 22 May 1966 between APIA Leichhardt and St. George Budapest, with APIA winning the match 3–2 to claim their second Federation Cup title.[2]
The First Round saw all ten First Division and the top 6 Second Division clubs from the previous season participate.
| Tie no. | Date | Team 1 | Score | Team 2 | ||
|---|---|---|---|---|---|---|
| 1 | bgcolor=#cfc | Canterbury-Marrickville | 1–0 | Granville-AEK | ||
| 2 | bgcolor=#cfc | Croatia-South Sydney | 5–0 | Prague | ||
| 3 | bgcolor=#cfc | Sydney Hakoah | 5–1 | Bankstown | ||
| 4 | bgcolor=#CFC | St. George-Budapest | 6–4 | Pan Hellenic | ||
| 5 | bgcolor=#CFC | South Coast United | 1–0 | Melita Eagles | ||
| 6 | bgcolor=#CFC | Yugal | 3–2 | Cumberland United | ||
| 7 | bgcolor=#CFC | Polonia-North Side | 3–1 | Wollongong Olympic | ||
| 8 | bgcolor=#CFC | APIA Leichhardt | 6–1 | Corinthian BESC |
| 1 |  Bill Rorke | |||
| 2 | George Nutall | |||
| 3 | Stan Ackerley | |||
| 4 | David Muir | |||
| 5 | Jim Sambrook | |||
| 6 | Phil Bottalico | |||
| 7 | John Giacometti | |||
| 8 | Ricardo Campana | |||
| 9 | Archie Blue | |||
| 10 | Johnny Watkiss | |||
| 11 | Bill Kerklaan | |||
| Substitutes: | ||||
| none | ||||
| Coach: | ||||
| Joe Marston | ||||
| width=25 | ! | width=25 | ||
|---|---|---|---|---|
| 1 | Frank Haffey | |||
| 2 | Herbert Stegbauer | |||
| 3 | Roger Hillary | |||
| 4 | Manfred Schaefer | |||
| 5 | Petar Banicevic | |||
| 6 | Tibor Zuckerman | |||
| 7 | Alan Hillhouse | |||
| 8 | Johnny Warren | |||
| 9 | George Yardley | |||
| 10 | Salvador Isaac | |||
| 11 | ||||
| Substitutes: | ||||
| 12 | ||||
| Coach: | ||||
 Laurie Hegyes | ||||
| NSW Federation Cup 1966 Champions | |
|---|---|
| |
| APIA Leichhardt Second Title |