The kinetics of the reaction of CHCl2 radical with O(P-3) atoms has been studied in a heatable tubular reactor coupled to a photoionization mass spectrometer. The time-resolved decay of CHCl2 was monitored as a function of O atom concentration (in a large excess of O atoms). The rate constants show a weak dependence on temperature over the 302-900 K range and can be represented by an Arrhenius expression k(T) = k(3) = (9.00 +/-0.92) x 10(-11)exp(57.4 +/- 19.1 K/T) cm(3) molecule(-1) s(-1). HCl was detected as a product of the CHCl2 +/- O(P-3) reaction.