Gaston Frédéric Blanchy (1 July 1868 – 1 October 1944) was a French sailor who competed in the 1900 Summer Olympics.

[1] He was crew on the British/French boat Ollé, which won the gold medals in both races of the 2-3 ton class with fellow crew member Jacques Le Lavasseur and helmsman William Exshaw.

He also participated in the open class, but did not finish.

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