A metal oxide sol-gel thin films based electronic nose to analyze different "single-cultivar" extra virgin olive oils is presented. In order to study a relation between the sensor responses and the real head-space of olive oil samples, analytical technique like headspace solid phase micro extraction\gas chromatography\mass spectrometry analysis was applied. The obtained GC-MS data were used to identify the particular compounds and characterize the chemical composition of the EVOOs samples. Statistical analyses were carried out on data obtained from electronic nose and GC-MS