Abstract The oils of Mentha piperita L., Coriandrum sativum, Anethum graveolens L., Petroselinum crispum (Mill.) Nym. ex A.W. Hill, Foeniculum rulgare Mill. ssp. capillaceum Gilib. var. dulce Mill., Satureja hortensis L., Thymus vulgaris L, Ocimum hasilicum L., Dracocephalum moldavica L, Laurus nohilis L and Carum carvi L., which were produced from plants grown in Mongolia between 1989-1993 were analyzed by GC and GCVMS. Although the expected major components were found in each of the oils, their amounts varied from their commercial equivalents. Key Word Index: Mentha piperita Coriandrum sativum Anethum graveolens Petroselinum crispum Foeniculum vulgare Satureja hortensis Thymus vulgaris Ocimum hasilicum Dracocephalum moldavica Laurus nohilis Carum carvi LamiaceaeApiaceaeLauraceaeessential oil compositionmenthonementhollinaloolÎ±-phellandrenelimonenecarvone(E)-anetholeÎ²-phellandrenep-menth-1,3,8-trienemyristicinÎ³-terpinenecarvacrolp-cymenethymolmethyl chavicolgermacrene D