Methylphenethylamine may refer to:

• α-Methylphenethylamine (amphetamine)
• β-Methylphenethylamine
• N-Methylphenethylamine (an endogenous trace amine in humans)
• 2-Methylphenethylamine
• 3-Methylphenethylamine
• 4-Methylphenethylamine

• Phenethylamine, with the organic chemistry name phenyl-ethyl-amine