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Multiple observers who independently harvest nonclassical correlations from asingle physical system share the system's ability to enable quantumcorrelations. We show that any number of independent observers can share thepreparation contextual outcome statistics enabled by state ensembles in quantumtheory. Furthermore, we show that even in the presence of any amount of whitenoise, there exists quantum ensembles that enable such shared preparationcontextuality. The findings are experimentally realised by applying sequentialunsharp measurements to an optical qubit ensemble which reveals three shareddemonstrations of preparation contextuality.

Noise-robust preparation contextuality shared between any number of observers via unsharp measurements