  We show that a Weyl law holds for the variational spectrum of the
$p$-Laplacian. More precisely, let $(\lambda_i)_{i=1}^\infty$ be the
variational spectrum of $\Delta_p$ on a closed Riemannian manifold $(X,g)$ and
let $N(\lambda) = \#\{i:\, \lambda_i < \lambda\}$ be the associated counting
function. Then we have a Weyl law $N(\lambda) \sim c \operatorname{vol}(X)
\lambda^{n/p}$. This confirms a conjecture of Friedlander. The proof is based
on ideas of Gromov and Liokumovich, Marques, Neves.
