A comparative study between different approaches to modeling thin wire scatterers using the finite-difference-time-domain (FD-TD) numerical technique is presented. These approaches include nulling of the electric fields on the wire, modeling the wire to be one FD-TD cell in thickness, and contour integral wire modeling. The method of moments adopted by the numerical electromagnetic code is used as a basis for comparison. The equal cell area-wire cross-section procedure gave accurate results but was expensive in memory storage requirements, while the contour integral method provided an efficient and accurate wire modeling technique.