Monoterpene indole alkaloids (MIAs), a prominent subgroup of terpene indole alkaloids (TIAs), exhibit remarkable structural diversity and significant pharmacological potential. Found predominantly in plants from the Apocynaceae, Loganiaceae, and Rubiaceae families, MIAs are biosynthesized through the condensation of tryptamine and secologanin, catalyzed by strictosidine synthase. This reaction leads to the formation of strictosidine, a central intermediate that diversifies into a wide range of MIAs. This communication provides a comprehensive overview of the analytical methodologies used for the identification, characterization, and isolation of MIAs. Modern analytical techniques such as HPTLC, HPLC, UHPLC, GC, and their coupling with mass spectrometry (HPLC–MS and GC–MS) are widely utilized. These methods offer high sensitivity, specificity, and resolution, enabling detailed profiling of complex plant extracts. Such approaches have proven effective in both qualitative and quantitative assessments of MIAs, aiding in the discovery of novel compounds and their therapeutic applications. We emphasize their role in isolating key MIAs such as vincristine, vinblastine, ajmalicine, and serpentine from Catharanthus and related species, thereby contributing to advancements in natural product chemistry and drug development.