Brian Anthony Joseph McGuire (13 December 1945 – 29 August 1977) was a racing driver and constructor from Australia.

McGuire travelled over to the UK from Australia with another hopeful young driver, Alan Jones, but did not enjoy his countryman's success.

With his privately run Williams FW04 at the 1976 British Grand Prix, he found himself as a reserve entry and was denied a chance to compete.

McGuire was killed practicing this car during a Shellsport G8 Championship race at Brands Hatch later that year.

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