The kinetics of the reaction of the OH radical with hydrogen peroxide, H2O2, are studied over a temperature range of 96-296 K. The low-temperature environment is provided by a pulsed Laval nozzle supersonic expansion of nitrogen with admixed H2O2. Hydrogen peroxide serves as both the OH radical photolytic precursor (lambda = 248 nm) and a reactant. Laser-induced fluorescence of the OH radicals excited in the (1,0) band of the A(2)Sigma(+)-X(2)Pi(i) transition is used to monitor the kinetics of OH removal. The rate coefficient of the OH + H2O2 reaction (k(1)) shows a negative temperature dependence within this temperature range, which can be expressed as k(1) = (6.8 +/- 1.0) x 10(-13) exp[(285 +/- 27)/T] cm(3) molecule(-1) s(-1). The combined low- and high-temperature (literature) kinetic data form a U-shaped Arrhenius plot, which suggests that the reaction mechanism changes from direct abstraction (at high temperatures) to a mechanism involving formation of a hydrogen-bonded complex (at low temperatures). Atmospheric implications of the new low-temperature kinetic data are discussed.