Gérald Guillemin (; 1948 – 13 July 2026) was a French organ builder.

Guillemin established his organ-building business in Malaucène in 1976, building organs for churches in Montpellier, Chavagnes-en-Paillers, Aubusson, Wasquehal, and Mérignac.

Guillemin died on 13 July 2026.

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