John Alfred Spencer (06 July 1931 - 04 March 1996) also known as John Spencer was a naval architect residing in New Zealand.
| Boat type | Design Year | Category |
|---|---|---|
| Cherub | 1951 | Sailing dinghy |
| Firebug | 1988 | Sailing dinghy |
| Flying Ant | 1967 | Sailing dinghy |
| Idle Along | 1930 | Sailing dinghy |
| Javelin | 1960 | Sailing dinghy |
| Spencer 30 | 1975 | Sailboat |