Tuncbilek lignite is subjected to pyrolysis under nitrogen stream of 3.5 L/min. at 0.5, 5, 10 MPa and in the temperature range between 220degrees C and 950degrees C. The effect of temperature and nitrogen pressure on the formation rates of evolved products during pyrolysis (tar, total gas and gaseous species [H-2, CH4, C2H4, C2H6, CO, CO2, and H2O]) and the yields of tar and gaseous products are also determined. It is found that thermal degradation, radical formation, and decomposition processes play an important role on pyrolysis of Tuncbilek lignite.