  In this paper, we show that the localization of three-dimensional N = 2
supersymmetric Chern-Simons theory on the ellipsoid-like squashed sphere is
related to a nontrivial knot structure called torus knot. More precisely, we
can capture the three sphere as the nontrivial so-called Seifert fibrations by
regarding 1/2 BPS Wilson loops as U(1) fibers. The topology of knotted 1/2 BPS
Wilson loops is controlled by squashing parameters. We calculate the 1/2 BPS
condition of the Wilson loop and find perfect agreement with known results. We
also remark on the level shift and framing anomaly.
