The lifetime of the S3 State of CS2 at 205 nm has been directly measured using femtosecond ultraviolet 1 + 1 multiphoton ionization spectroscopy. Excitation pulses in the deep UV are produced by third harmonic generation of amplified CPM pulses. The lifetime of the S3 (or A) state at 205 nm is measured to be 600 +/- 100 fs. This is compared to previous indirect lifetime measurements for this state.