We study near-infrared properties of the old open cluster King 11, based on the 2MASS photometric data. We determine the location of the red giant clump(RGC) in the (K, J - K) colo-magnitude diagram and derive the distance modulus of King 11 to be $(m-M)_0$ = $12.50{pm}0.10$ using the mean K magnitude of RGC. From the red giant branch slope - [Fe/H] relation we obtain the metallicity of this cluster, [Fe/H]=$-0.17{pm}0.07$. The age and interstellar reddening of this cluster are estimated to be log t = $9.48{pm}0.05$, E(B-V)=$0.90{pm}0.03$, by applying Padova isochrone fits to the data.