The resonance Raman spectrum of the beta-methylallyl (2-methyl-allyl) radical is detected with excitation from 223 nm to 243 nm. The first observation of four fundamentals, the symmetric CH2 rock, the symmetric CCC stretch, the C-CH3 stretch, and the CCC bend, as well as an overtone, the symmetric CH2 twist of the beta-methylallyl radical are reported. The assignments of the resonance Raman spectra are based upon the previous force field calculation, and comparisons with molecules having similar characteristic vibrations. Results from the resonance Raman spectra are compared with frequencies obtained by infrared spectroscopy using matrix isolation and our previous work on the allyl radical.