Quenching of excited iodine atoms (I(5p(5), P-2(1/2))) by nitrogen oxides are processes of relevance to discharge-driven oxygen iodine lasers. Rate constants at ambient and elevated temperatures (293-380 K) for quenching of I(P-2 (1/2)) atoms by NO2, N2O4, and N2O have been measured using time-resolved I(P-2(1/2)) -> I(P-2(3/2)) 1315 nm emission. The excited atoms were generated by pulsed laser photodissociation of CF3I at 248 nm. The rate constants for I(P-2(1/2)) quenching by NO2 and N2O were found to be independent of temperature over the range examined with average values of (2.9 +/- 0.3) x 10(-15) and (1.4 +/- 0.1) x 10(-15) CM3 s(-1), respectively. The rate constant for quenching of I(P-2(1/2)) by N2O4 was found to be (3.5 +/- 0.5) x 10(-13) cm(3) s(-1) at ambient temperature.