Gauss's lemma can mean any of several mathematical lemmas named after Carl Friedrich Gauss:

• Gauss's lemma (polynomials), the greatest common divisor of the coefficients is a multiplicative function
• Gauss's lemma (number theory), condition under which an integer is a quadratic residue
• Gauss's lemma (Riemannian geometry), theorem in manifold theory
• A generalization of Euclid's lemma is sometimes called Gauss's lemma

• List of topics named after Carl Friedrich Gauss

This disambiguation page lists mathematics articles associated with the same title.
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