Distributed Bragg reflector (DBR) lattice-matched Pb1-xSn xTe/PbSeyTe1-y diode lasers were fabricated using liquid phase epitaxy. These DBR lasers were operated within a limited range of heat-sink temperatures 8.5-38 K, and the threshold current density at 20 K was ∼3 kA/cm2. Single longitudinal-mode operation was obtained up to more than three times the threshold current. The DBR lasers exhibited continuous tuning over a relatively wide range of ∼6 cm -1 near 775 cm-1 (12.9 μm). The average tuning rate was 0.21 cm-1/K, and it was much smaller than the rate for corresponding Fabry-Perot lasers, which was 2.3 cm-1/K.