Clark McConachy
| Born | 15 April 1895 Glenorchy, New Zealand |
|---|---|
| Died | 12 April 1980 (aged 84) Auckland, New Zealand |
| Nickname | Mac |
| World Billiards Champion | 1951 |
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Clark McConachy MBE (15 April 1895 – 12 April 1980), often known simply as Mac, was a New Zealand professional player of English billiards and snooker.