| Medal record | ||
|---|---|---|
| Men's Rowing | ||
| Competitor for New Zealand | ||
| British Empire Games | ||
| Silver | 1950 Auckland | Eight |
| Silver | 1954 Vancouver | Coxed Four |
William "Bill" James Tinnock (5 April 1930) is a former New Zealand rower.
At the 1950 British Empire Games he won the silver medal as part of the men's eight alongside crew members Donald Adam, Kerry Ashby, Murray Ashby, Bruce Culpan, Thomas Engel, Graham Jarratt, Don Rowlands and Edwin Smith. At the next British Empire and Commonwealth Games in Vancouver, he won another silver medal in the men's coxed four.
At the 1952 Summer Olympics he competed as part of the men's coxed four without progressing through to the finals.[1]