  Expectation value of lightlike polygon Wilson loop is computed in the
three-dimensional ABJM theory up to second-order in `t Hooft coupling in the
limit of infinitely many colors and the result is critically compared with that
in the four-dimensional N=4 super Yang-Mills theory. We first obtain analytic
result for hexagon Wilson loop by combining Mellin-Barnes transformation, high
precision numerical computation and the PSLQ algorithm. We then derive a
version of operator product expansion (OPE) that reduces lightlike n-gon to a
linear combination of (n-2)-gons in the soft-collinear limit of the polygon
geometry. The Wilson coefficient of the OPE is the universal antenna function
defined by a collapsed lightlike tetragon Wilson loop. Using this, we first
construct a all order recursion relation among the lightlike Wilson loops and
then solve it for arbitrary polygon with the hexagon Wilson loop as the initial
condition. The functional form of the polygon Wilson loop takes the structure
remarkably similar to the four-dimensional N=4 super Yang-Mills theory. We also
observe that Gram subdeterminant conditions for polygon moduli variables
restricts that the Wilson loop contour should be restricted even-sided. As a
consistency check, we take thermodynamic limit of regular polygon and reproduce
the known results for spacelike circular Wilson loop expectation value.
