Sharp spectral lines are obtained for the Cu i511 nm and the Au i628 nm transitions from a sputtering‐based laser operating at room temperature. The Au iline exhibits a single peak with a linewidth of 360 MHz and the Cu iline consists of three well‐resolved peaks with linewidths of 800, 700, and 700 MHz in order of increasing frequency. The spectral lines result from saturated emission on the strongest hyperfine components.