A diode-pumped, actively $Q$-switched dual-wavelength laser employing $\mathrm{Nd}\text{:}{\mathrm{YVO}}_4$ self-Raman emission at 1524 nm and undoped ${\mathrm{GdVO}}_4$ Raman emission at 1522 nm is demonstrated. With a pump power of 21.5 W and pulse repetition frequency of 20 kHz, a maximum dual-wavelength output power of 1.62 W was obtained, comprising a 0.54 W, 1522 nm Raman component and 1.08 W, 1524 nm self-Raman component. The corresponding dual-wavelength Raman pulse width was 5.6 ns. The experimental results indicate that this laser, with quite small wavelength separation, was effective by virtue of simultaneous self-Raman and Raman shifts.