This document presents the design and simulation of a printed L-slot antenna for wireless applications. Two unequal L-shaped slots are introduced in the microstrip patch to reduce the resonant frequency. Simulation results show the antenna resonates at three frequencies (3.58 GHz, 5.16 GHz, and 6.13 GHz) with return losses of 11.50 dB, 14.23 dB, and 13.40 dB, respectively. The simple and compact design makes the antenna suitable for applications such as Wi-Fi, WiMAX, and WLAN.