In this work, we have designed and developed MWCNTs based ECG electrodes that are versatile, skin friendly, flexible and waterproof thus helpful in better acquisition of ECG signals compared with the traditional electrodes available in the market. Thick film fabrication technology has been employed in developing the electrodes. Due to advancement in nanotechnology, we have reduced the dimensions, cost, and power requirement of the electrodes. We have used multiwalledcarbonnanotubes(MWCNTs) / Polydimethylsiloxane (PDMS) composite material for developing the electrodes. These electrodes will provide higher performance over typical electrodes and yet another important factor is that these electrodes are waterproof. We have also developed smart electronics circuit for interfacing the proposed MWCNTs/PDMS composite ECG electrode with android phones for mobile ECG application.