The yield and composition of essential oil obtained from fruits of coriander (Coriandrum sativum L.) cultivated in Poland was investigated. Experiments were carried out by means of hydrodistillation method using Clevenger and Deryng apparatus. No effect of apparatus construction on the essential oil yield was observed during 2-h process (yield of 1.62%). The composition of the coriander essential oil was determined by using gas chromatography with mass spectrometry (GC-MS). The main components were linalool (78.45%), α-pinene (5.03%), camphor (3.90%), γ-terpinene (3.80%), D-limonene (2.58%), and geranyl acetate (2.13%). Moreover, the influence of different factors such as time of hydrodistillation, sodium chloride addition and method modification by using microwave heating on essential oil yield was studied. Addition of sodium chloride to distilled water did not affect the yield of essential oil, but slightly increased the content of camphor. Replacing conventional heating with microwaves during 15-min experiments enhanced the yield of essential oil from 1.20 to 1.35% and had a slightly greater influence on its composition, increasing contents of some less-volatile components: linalool, camphor, geraniol, p-cymene and D-limonene. The results obtained indicate that microwave heating may be supporting method for the production of coriander essential oil by the hydrodistillation process.