Dielectric materials which capable to store charges are constantly being developed and improved for electronic applications such as in microelectronic integrated circuits (ICs). In this study, polylactic acid (PLA)/multiwalled carbon nanotube (MWCNT) composites are prepared and their dielectric properties are investigated. PLA/MWCNT composites have PLA as the matrix and MWCNT as filler with a loading of 1 wt%. The composites are porous composites achieved by using solvent casting and particulate leaching (SCPL) method. A frequency range of 1 kHz to 1 MHz is applied to measure the dielectric properties at room temperature. The PLA/MWCNT composites are categorized as low-k dielectric materials looking at the results of the dielectric test.