Broadly tunable cw uv radiation has been generated by frequency doubling and sum frequency mixing in ADP, ADA, and RDP, using the output of a Kr laser, a Rh6G dye laser, and an oxazine 1 dye laser. Continuous tunable uv radiation has been obtained from 285 nm to 400 nm with a maximum power of 750 microW at 313 nm and with powers in excess of 5 microW from 290 nm to 390 nm.