Dimethylphenethylamine may refer to:
α,α-Dimethylphenethylamine (Phentermine)
N,α-Dimethylphenethylamine (Methamphetamine)
2,α-Dimethylphenethylamine (Ortetamine)
3,α-Dimethylphenethylamine
4,α-Dimethylphenethylamine
N,N-Dimethylphenethylamine (a common food additive)