The composition of the essential oils obtained fromInula crithmoides specimens, harvested from wild populations during their flowering season in Greece, Malta and Spain was investigated by means of GC and GC/MS. All oils were dominated by monoterpene hydrocarbons with α-phellandrene (11.0–26.2%), β-phellandrene (0.0–30.7%) and p-cymene (trace-53.8%) being the major components. p-Cymene, the main component of the Spanish specimens (53.8%), appeared to gradually decrease from West to East. The main component of the Greek oil was found to be β-phellandrene (30.7%). A total of 46 compounds were identified.