We present a Raman fiber laser based on a chalcogenide glass microwire. The microwire is pumped in the C-band, and the resulting laser oscillates in the L-band. The power conversion efficiency of the device is ∼17%, and the laser threshold is 23.2 dBm (pulse energy = 4.65 pJ) in peak pump power. By extension, the device can be used for all-optical wavelength conversion of existing laser sources in the useful transmission window of chalcogenide, from the C-band up to a wavelength of ∼10 μm in the mid-infrared.