The Raman spectrum of stage 1 europium intercalated graphite, EuC 6, has been recorded at room temperature. EuC 6 has a p(√3 × √3) R30° in-plane superlattice structure, the same as that of LiC 6. The c-axis stacking sequences of EuC 6 and LiC 6 are different. The Raman spectrum of EuC 6 exhibits a broad asymmetric Fano resonance peak at 1500 ± 5 cm -1, similar to that observed in MC 8 ( M = K, Rb and Cs). However, there is no evidence of any spectral feature around 580 cm -1 as what has been observed in MC 8. Considering the Raman features of various graphite intercalation compounds in light of their superlattice structures, we suggest that: (1) The feature around 580 cm -1 is a characteristic associated only with the MC 8 p(2 × 2) R0° in-plane superlattice structure. It should originate from the M point phonons of pristine graphite, which become Raman active as predicted by phonon band structure calculations. (2) The continuous background in the spectra of EuC 6 and MC 8, which results in the Fano resonance peak at 1500 cm -1, is associated with the staggered stacking sequence. Stacking faults are easy to occur in crystals with staggered stacking sequences, but not in crystals with complete elliptical sequences. Therefore, a disorder induced continuum is observed in the Raman spectra of EuC 6 and MC 8, but not in that of LiC 6.