Methyltryptamine (MT) may refer to:
N-Methyltryptamine (NMT; monomethyltryptamine) α-Methyltryptamine (AMT or αMT; Indopan) 1-Methyltryptamine (1-Me-T; PAL-637) 2-Methyltryptamine (2-Me-T) 4-Methyltryptamine (4-Me-T) 5-Methyltryptamine (5-Me-T; PAL-22) 6-Methyltryptamine (6-Me-T; PAL-522) 7-Methyltryptamine (7-Me-T; PAL-286)
See also Substituted tryptamine Dimethyltryptamine Ethyltryptamine Trimethyltryptamine Methylethyltryptamine Methoxytryptamine Hydroxytryptamine Methylserotonin Methylpsilocin Methyl-DMT Methyl-5-MeO-DMT