  We investigate the supersymmetric Wilson loops in $d=3$ $\mathcal{N}=4$ super
Chern-Simons-matter theory obtained from non-chiral orbifold of ABJM theory. We
work in both Minkowski spacetime and Euclidean space, and we construct 1/4 and
1/2 BPS Wilson loops. We also provide a complete proof that the difference
between 1/4 and 1/2 Wilson loops is $Q$-exact with $Q$ being some supercharge
that is preserved by both the 1/4 and 1/2 Wilson loops. This plays an important
role in applying the localization techniques to compute the vacuum expectation
values of Wilson loops. We also study the M-theory dual of the 1/2 BPS circular
Wilson loop.

High Energy Physics - Theory;General Relativity and Quantum Cosmology